Hundreds of armed protesters charged police barricades in Kiev's central Independence Square, despite a truce called just hours earlier by the country's embattled president, in Kiev, Ukraine on February 20, 2014. Protesters pushed the police back about 200 metres and were in control of most of the square they had occupied at the start of Ukraine's three-month-old political crisis. Photo by Rafael Yaghobzadeh/ABACAPRESS.COM

Hundreds of armed protesters charged police barricades in Kiev's central Independence Square, despite a truce called just hours earlier by the country's embattled president, in Kiev, Ukraine on February 20, 2014. Protesters pushed the police back about 200 metres and were in control of most of the square they had occupied at the start of Ukraine's three-month-old political crisis. Photo by Rafael Yaghobzadeh/ABACAPRESS.COM

Hundreds of armed protesters charged police barricades in Kiev's central Independence Square, despite a truce called just hours earlier by the country's embattled president, in Kiev, Ukraine on February 20, 2014. Protesters pushed the police back about 200 metres and were in control of most of the square they had occupied at the start of Ukraine's three-month-old political crisis. Photo by Rafael Yaghobzadeh/ABACAPRESS.COM

Hundreds of armed protesters charged police barricades in Kiev's central Independence Square, despite a truce called just hours earlier by the country's embattled president, in Kiev, Ukraine on February 20, 2014. Protesters pushed the police back about 200 metres and were in control of most of the square they had occupied at the start of Ukraine's three-month-old political crisis. Photo by Rafael Yaghobzadeh/ABACAPRESS.COM

Hundreds of armed protesters charged police barricades in Kiev's central Independence Square, despite a truce called just hours earlier by the country's embattled president, in Kiev, Ukraine on February 20, 2014. Protesters pushed the police back about 200 metres and were in control of most of the square they had occupied at the start of Ukraine's three-month-old political crisis. Photo by Rafael Yaghobzadeh/ABACAPRESS.COM

Hundreds of armed protesters charged police barricades in Kiev's central Independence Square, despite a truce called just hours earlier by the country's embattled president, in Kiev, Ukraine on February 20, 2014. Protesters pushed the police back about 200 metres and were in control of most of the square they had occupied at the start of Ukraine's three-month-old political crisis. Photo by Rafael Yaghobzadeh/ABACAPRESS.COM

Hundreds of armed protesters charged police barricades in Kiev's central Independence Square, despite a truce called just hours earlier by the country's embattled president, in Kiev, Ukraine on February 20, 2014. Protesters pushed the police back about 200 metres and were in control of most of the square they had occupied at the start of Ukraine's three-month-old political crisis. Photo by Rafael Yaghobzadeh/ABACAPRESS.COM

Hundreds of armed protesters charged police barricades in Kiev's central Independence Square, despite a truce called just hours earlier by the country's embattled president, in Kiev, Ukraine on February 20, 2014. Protesters pushed the police back about 200 metres and were in control of most of the square they had occupied at the start of Ukraine's three-month-old political crisis. Photo by Rafael Yaghobzadeh/ABACAPRESS.COM

Hundreds of armed protesters charged police barricades in Kiev's central Independence Square, despite a truce called just hours earlier by the country's embattled president, in Kiev, Ukraine on February 20, 2014. Protesters pushed the police back about 200 metres and were in control of most of the square they had occupied at the start of Ukraine's three-month-old political crisis. Photo by Rafael Yaghobzadeh/ABACAPRESS.COM

Hundreds of armed protesters charged police barricades in Kiev's central Independence Square, despite a truce called just hours earlier by the country's embattled president, in Kiev, Ukraine on February 20, 2014. Protesters pushed the police back about 200 metres and were in control of most of the square they had occupied at the start of Ukraine's three-month-old political crisis. Photo by Rafael Yaghobzadeh/ABACAPRESS.COM

Anti-government protesters carry a wounded policemen during clashes with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Wednesday, Feb. 19, 2014. Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky), APTOPIX

An anti-government protester shooting fireworks from a homemade gun during clashes with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Wednesday, Feb. 19, 2014. The deadly clashes in Ukraine's capital have drawn sharp reactions from Washington, generated talk of possible European Union sanctions and led to a Kremlin statement blaming Europe and the West. A roundup of some of the international reactions. (AP Photo/Efrem Lukatsky)

Anti-government protesters throw stones during clashes with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Wednesday, Feb. 19, 2014. The deadly clashes in Ukraine's capital have drawn sharp reactions from Washington, generated talk of possible European Union sanctions and led to a Kremlin statement blaming Europe and the West. (AP Photo/Efrem Lukatsky)

Anti-government protesters are wounded after the clash with the police in Kiev on February 18, 2014. Police said seven officers died from gunshot wounds, while authorities and demonstrators said five civilians were also killed in the clashes, bringing the death toll to at least 16. Hundreds of people were injured, including dozens of police officers, some with serious wounds. AFP PHOTO / OLEKSANDR RATUSHNIAK

Anti-government protesters are wounded after the clash with the police in Kiev on February 18, 2014. Police said seven officers died from gunshot wounds, while authorities and demonstrators said five civilians were also killed in the clashes, bringing the death toll to at least 16. Hundreds of people were injured, including dozens of police officers, some with serious wounds. AFP PHOTO/ OLEKSANDR RATUSHNIAK

TOPSHOTS Anti-government protesters clash with the police on Independence Square in Kiev early on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. As dawn rose over Kiev's battered city centre, protesters hurled paving stones and Molotov cocktails at lines of riot police that had pushed into the heart of the devastated protest camp on Independence Square. AFP PHOTO/SERGEI SUPINSKY

TOPSHOTS Anti-government protesters are wounded after the clash with the police in Kiev on February 18, 2014. Police said seven officers died from gunshot wounds, while authorities and demonstrators said five civilians were also killed in the clashes, bringing the death toll to at least 16. Hundreds of people were injured, including dozens of police officers, some with serious wounds. AFP PHOTO/ OLEKSANDR RATUSHNIAK

TOPSHOTS Anti-government protesters are wounded after the clash with the police in Kiev on February 18, 2014. Police said seven officers died from gunshot wounds, while authorities and demonstrators said five civilians were also killed in the clashes, bringing the death toll to at least 16. Hundreds of people were injured, including dozens of police officers, some with serious wounds. AFP PHOTO / OLEKSANDR RATUSHNIAK

Anti-government protesters dig up cobblestones to use them as rocks against riot police on Kiev's Independence square on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. As dawn rose over Kiev's battered city centre, protesters hurled paving stones and Molotov cocktails at lines of riot police that had pushed into the heart of the devastated protest camp on Independence Square. AFP PHOTO/GENYA SAVILOV

Anti-government protesters dig up cobblestones to use them as rocks against riot police on Kiev's Independence square on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. As dawn rose over Kiev's battered city centre, protesters hurled paving stones and Molotov cocktails at lines of riot police that had pushed into the heart of the devastated protest camp on Independence Square. AFP PHOTO/GENYA SAVILOV

TOPSHOTS Anti-government protesters dig up cobblestones to use them as rocks against riot police on Kiev's Independence square on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. As dawn rose over Kiev's battered city centre, protesters hurled paving stones and Molotov cocktails at lines of riot police that had pushed into the heart of the devastated protest camp on Independence Square. AFP PHOTO/GENYA SAVILOV

Anti-government protesters who were wounded during last night's deadly clashes with riot police on Kiev's Indepndence Square, rest on February 19, 2014 in Mykhaylo Gold Dome cathedral which was turned into a hospital. Anti-government protesters in Kiev braced on February 19 for a fresh assault by riot police after a day of fierce clashes left at least 25 people dead in Ukraine's worst crisis since the collapse of the Soviet Union. AFP PHOTO/ ANATOLII BOIKO

A anti-government protester prepares to throw a Molotov cocktail at riot police on Kiev's Independence square on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. As dawn rose over Kiev's battered city centre, protesters hurled paving stones and Molotov cocktails at lines of riot police that had pushed into the heart of the devastated protest camp on Independence Square. AFP PHOTO / PIERO QUARANTA

An anti-government protester uses a slingshot to throw stones towards riot police on Kiev's Independence square on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. As dawn rose over Kiev's battered city centre, protesters hurled paving stones and Molotov cocktails at lines of riot police that had pushed into the heart of the devastated protest camp on Independence Square. AFP PHOTO / PIERO QUARANTA

An anti-government protester prepares to throw a stone at riot police while another holds up a cross during clashes on Kiev's Independence square on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. As dawn rose over Kiev's battered city centre, protesters hurled paving stones and Molotov cocktails at lines of riot police that had pushed into the heart of the devastated protest camp on Independence Square. AFP PHOTO / PIERO QUARANTA

Anti-government protesters dig up cobblestones to use them as rocks against riot police on Kiev's Independence square on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. As dawn rose over Kiev's battered city centre, protesters hurled paving stones and Molotov cocktails at lines of riot police that had pushed into the heart of the devastated protest camp on Independence Square. AFP PHOTO / PIERO QUARANTA

Anti-government protesters throw cobblestones at riot police during clashes on Kiev's Independence square on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. As dawn rose over Kiev's battered city centre, protesters hurled paving stones and Molotov cocktails at lines of riot police that had pushed into the heart of the devastated protest camp on Independence Square. AFP PHOTO / PIERO QUARANTA

A anti-government protester prepares to throw a Molotov cocktail at riot police on Kiev's Independence square on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. As dawn rose over Kiev's battered city centre, protesters hurled paving stones and Molotov cocktails at lines of riot police that had pushed into the heart of the devastated protest camp on Independence Square. AFP PHOTO / PIERO QUARANTA

Anti-government protesters throws a rock at riot police on Kiev's Independence square on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. As dawn rose over Kiev's battered city centre, protesters hurled paving stones and Molotov cocktails at lines of riot police that had pushed into the heart of the devastated protest camp on Independence Square. AFP PHOTO / PIERO QUARANTA

Anti-government protesters walk in the rubble on Kiev's Independence square on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. As dawn rose over Kiev's battered city centre, protesters hurled paving stones and Molotov cocktails at lines of riot police that had pushed into the heart of the devastated protest camp on Independence Square. AFP PHOTO / PIERO QUARANTA

An anti-government protester uses a slingshot to throw a rock towards riot police during clashes on Kiev's Independence square on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. Ukraine's security service on February 19 announced a nationwide "anti-terrorist" operation in response to deadly anti-government protests. "The National Security Service and Ukrainian Anti-Terrorist Centre have taken the decision to conduct an anti-terrorist operation across the territory of Ukraine," security agency head Oleksandr Yakimenko said in a statement. AFP PHOTO / SANDRO MADDALENA

An anti-government protesters stand on February 19, 2014 outside the remains of the Trade Union building on Kiev's Independence Square during clashes with riot police. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. Ukraine's security service on February 19 announced a nationwide "anti-terrorist" operation in response to deadly anti-government protests. "The National Security Service and Ukrainian Anti-Terrorist Centre have taken the decision to conduct an anti-terrorist operation across the territory of Ukraine," security agency head Oleksandr Yakimenko said in a statement. AFP PHOTO / SANDRO MADDALENA

Anti-government protesters throw rocks at riot police during clashes on Kiev's Independence square on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. As dawn rose over Kiev's battered city centre, protesters hurled paving stones and Molotov cocktails at lines of riot police that had pushed into the heart of the devastated protest camp on Independence Square. AFP PHOTO / PIERO QUARANTA

TOPSHOTS Anti-government protesters who were wounded during last night's deadly clashes with riot police on Kiev's Indepndence Square, rest on February 19, 2014 in Mykhaylo Gold Dome cathedral which was turned into a hospital. Anti-government protesters in Kiev braced on February 19 for a fresh assault by riot police after a day of fierce clashes left at least 25 people dead in Ukraine's worst crisis since the collapse of the Soviet Union. AFP PHOTO/ ANATOLII BOIKO

TOPSHOTS A wounded anti-government protester is evacuated during clashes with riot police on Kiev's Independence square on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. As dawn rose over Kiev's battered city centre, protesters hurled paving stones and Molotov cocktails at lines of riot police that had pushed into the heart of the devastated protest camp on Independence Square. AFP PHOTO / PIERO QUARANTA

Anti-government demonstrators stand behind a barricade near Kiev's Independence Square, known as Maidan, on February 19, 2014. Hundreds of armed protesters charged police barricades Thursday on Kiev's central Independence Square, despite a truce called just hours earlier by the country's embattled president. Protesters pushed the police back about 200 metres and were in control of most of the square they had occupied at the start of Ukraine's three-month-old political crisis. Ukraine's embattled president was on Thursday to hold crisis talks with EU foreign ministers after calling a "truce" following the deadliest clashes in the ex-Soviet country's three-month crisis. AFP PHOTO / SANDRO MADDALENA

TOPSHOTS Protesters are seen amid burning barricades during the face off against heavily-armed police February 20, 2014 in Kiev. Ukraine's embattled leader announced a "truce" with the opposition as he prepared to get grilled by visiting EU diplomats over clashes that killed 26 and left the government facing diplomatic isolation. The shocking scale of the violence three months into the crisis brought expressions of grave concern from the West and condemnation of an "attempted coup" by the Kremlin. AFP PHOTO / Piero QUARANTA

TOPSHOTS A protester hurls a molotov cocktail towards police from the barricades at Independence square in Kiev on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. AFP PHOTO / LOUISA GOULIAMAKI

TOPSHOTS Protesters stand on barricades at Independence square in Kiev on February 19, 2014. Protesters braced on February 19 for a fresh assault by riot police in central Kiev after a day of clashes left at least 25 people dead in the worst violence since the start of Ukraine's three-month political crisis. AFP PHOTO / LOUISA GOULIAMAKI

A view of the Independence Square during the clashes between anti-government protestors and riot police in Kiev, Ukraine on February 18, 2014. Ukraine's ongoing political crisis took a deadly turn on Tuesday as violent protests in the capital Kiev left 14 dead, according to the interior ministry. Clashes began between protesters and riot police as the crowd attempted to breach the police barricades that surrounded the parliament building. Photo by Artem Slipachuk/AA/ABACAPRESS.COM

Ukrainian protesters help an injured man during the clashes between anti-government protestors and riot police at Independence Square in Kiev, Ukraine on February 18, 2014. Ukraine's ongoing political crisis took a deadly turn on Tuesday as violent protests in the capital Kiev left 14 dead, according to the interior ministry. Clashes began between protesters and riot police as the crowd attempted to breach the police barricades that surrounded the parliament building. Photo by Artem Slipachuk/AA/ABACAPRESS.COM

Ukraine's ongoing political crisis takes a deadly turn on Tuesday as violent protests in the capital Kiev left 14 dead, according to the interior ministry. Clashes began between protesters and riot police as the crowd attempted to breach the police barricades that surrounded the parliament building. Photo by Artem Slipachuk/AA/ABACAPRESS.COM

An injured Ukrainian riot police is carried by his collegaues during the clashes between anti-government protestors and riot police at Independence Square in Kiev, Ukraine on February 18, 2014. Ukraine's ongoing political crisis took a deadly turn on Tuesday as violent protests in the capital Kiev left 14 dead, according to the interior ministry. Clashes began between protesters and riot police as the crowd attempted to breach the police barricades that surrounded the parliament building. Photo by Artem Slipachuk/AA/ABACAPRESS.COM

Ukrainian protesters help an injured man during the clashes between anti-government protestors and riot police at Independence Square in Kiev, Ukraine on February 18, 2014. Ukraine's ongoing political crisis took a deadly turn on Tuesday as violent protests in the capital Kiev left 14 dead, according to the interior ministry. Clashes began between protesters and riot police as the crowd attempted to breach the police barricades that surrounded the parliament building. Photo by Artem Slipachuk/AA/ABACAPRESS.COM

Kiev 19/02/2014---Protestors gather in Independence Square during clashes between anti-government protesters and riot police forces on February 19, 2014 in Kiev, Ukraine. At least 26 people have been killed and hundreds injured as violence once again flared between police and anti-government protesters, after several weeks of calm. The anti-government protesters are calling for the ouster of President Viktor Yanukovych over corruption and an abandoned trade agreement with the European Union

Anti-government protesters clash with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky)

Anti-government protesters clash with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky)

Anti-government protesters clash with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky), APTOPIX

Riot police officers work to remove an injured officer from the scene during clashes with protesters outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Some thousands of anti-government protesters clashed with police in a new eruption of violence. (AP Photo/Efrem Lukatsky)

Riot police officers carry out an injured officer during clashes with protesters outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky)

A anti-government protester is engulfed in flames while running from the scene, during clashed with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky), APTOPIX

Riot police clash with anti-government protesters outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Some thousands of anti-government protesters clashed with police in a new eruption of violence Tuesday. (AP Photo/Efrem Lukatsky), APTOPIX

Anti-government protesters clash with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky)

An anti-government protester dressed in Ukrainian national dress throws a stone during clashes with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Some thousands of anti-government protesters clashed with police in a new eruption of violence Tuesday. (AP Photo/Efrem Lukatsky)

Riot police clash with anti-government protesters outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky)

An anti-government protester finds cover during clashes with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky)

Anti-government protesters lob stones during clashes with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Some thousands of angry anti-government protesters clashed with police in a new eruption of violence Tuesday. (AP Photo/Efrem Lukatsky)

Anti-government protesters clashes with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Some thousands of anti-government protesters clashed with police in a new eruption of violence Tuesday. (AP Photo/Efrem Lukatsky)

An anti-government protester throw a stone during clashes with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky)

A riot police officer shoots during clashes with protesters outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky)

An anti-government protester prepares to throw a Molotov's cocktail during clashes with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky)

Anti-government protesters clash with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky)

Anti-government protesters clash with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014.Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky)

An anti-government protester fires an improvised weapon during clashes with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of anti-government protesters clashed with police in a new eruption of violence Tuesday. (AP Photo/Sergei Chuzavkov)

Anti-government protesters clash with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Ukraine's festering political crisis took a deadly turn Tuesday, as thousands of anti-government protesters clashed with police outside Ukraine's parliament. Three protesters were killed in the melee, the opposition reported, and emergency workers found another person dead after a fire at the ruling party's office in Kiev. Law enforcement agencies gave the demonstrators a deadline of 6 p.m. (1600 GMT) to stop the confrontations and vowed to restore order. (AP Photo/Sergei Chuzavkov), APTOPIX

An anti-government protester is engulfed in flames during clashes with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of angry anti-government protesters clashed with police in a new eruption of violence following new maneuvering by Russia and the European Union to gain influence over this former Soviet republic. (AP Photo/Efrem Lukatsky), APTOPIX

Anti-government protesters clashed with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Ukraine's political crisis escalated sharply Tuesday, with at least nine people reported killed and scores injured in violent, often fiery battles between anti-government demonstrators and police in Kiev. The clashes outside parliament erupted after the opposition accused the government of ignoring its demands even after nearly three months of protests that have paralyzed the capital. It was the worst violence since the protests began in late November.(AP Photo/Efrem Lukatsky)

An anti-government protester throws a stone during clashes with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Some thousands of angry anti-government protesters clashed with police in a new eruption of violence Tuesday. (AP Photo/Efrem Lukatsky)

Anti-government protesters look on during clashes with riot police outside Ukraine's parliament in Kiev, Ukraine, Tuesday, Feb. 18, 2014. Some thousands of angry anti-government protesters clashed with police in a new eruption of violence Tuesday. (AP Photo/Efrem Lukatsky)

An anti-government protester runs during clashes with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked a large opposition camp in Ukraine's capital on Tuesday that has been the center of nearly three months of anti-government protests after at least nine people were killed in street clashes. (AP Photo/Efrem Lukatsky)

Anti-government protesters clash with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked a large opposition camp in Ukraine's capital on Tuesday that has been the center of nearly three months of anti-government protests after at least nine people were killed in street clashes. (AP Photo/Efrem Lukatsky)

Riot police storm Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked the large opposition camp in Ukraine's capital on Tuesday that has been the center of nearly three months of anti-government protests after at least nine people were killed in street clashes. (AP Photo/Efrem Lukatsky), APTOPIX

Monuments to Kiev's founders burn as anti-government protesters clash with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked the large opposition camp in Ukraine's capital on Tuesday that has been the center of nearly three months of anti-government protests after at least nine people were killed in street clashes. (AP Photo/Efrem Lukatsky), APTOPIX

Riot police storm Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked the large opposition camp in Ukraine's capital on Tuesday that has been the center of nearly three months of anti-government protests after at least nine people were killed in street clashes. (AP Photo/Efrem Lukatsky)

Anti-government protesters clash with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked the large opposition camp in Ukraine's capital on Tuesday that has been the center of nearly three months of anti-government protests after at least nine people were killed in street clashes. (AP Photo/Efrem Lukatsky)

An anti-government protester, right, prepares to throw a Molotov cocktail during clashes with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked a large opposition camp in Ukraine's capital on Tuesday that has been the center of nearly three months of anti-government protests after at least nine people were killed in street clashes. (AP Photo/Efrem Lukatsky)

Anti-government protesters clash with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked the large opposition camp in Ukraine's capital on Tuesday that has been the center of nearly three months of anti-government protests after at least nine people were killed in street clashes. (AP Photo/Efrem Lukatsky)

Anti-government protesters clash with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked a large opposition camp in Ukraine's capital on Tuesday that has been the center of nearly three months of anti-government protests after at least nine people were killed in street clashes. (AP Photo/Efrem Lukatsky)

KIEV, UKRAINE, FEBRUARY 18, 2014: A man carries a Molotov cocktail in front of a burning vehicles and tires on Institutska Street near Ukraine's parliament. Pro EU and anti government demonstrators clashed with police in the Ukrainian capitol Kiev on Tuesday with media reports saying that at least 5 people were killed during the confrontations. A short distance away is Independence Square, which has been the center of a protest movement for approximately 3 months and has been dubbed the Euro Maidan (Euro Square) by the demonstrators. The protest movement began in November after the Ukrainian government said it would not sign an EU Association Agreement that would have brought the nation closer to the European Union.

KIEV, UKRAINE, FEBRUARY 18, 2014: A man throws a piece of cobble stone towards police lines in front of a burning vehicles and tires on Institutska Street near Ukraine's parliament. Pro EU and anti government demonstrators clashed with police in the Ukrainian capitol Kiev on Tuesday with media reports saying that at least 5 people were killed during the confrontations. A short distance away is Independence Square, which has been the center of a protest movement for approximately 3 months and has been dubbed the Euro Maidan (Euro Square) by the demonstrators. The protest movement began in November after the Ukrainian government said it would not sign an EU Association Agreement that would have brought the nation closer to the European Union.

KIEV, UKRAINE, FEBRUARY 18, 2014: A man plays traditional Ukrainian melodies on a bagpipe in front of a burning vehicles and tires on Institutska Street near Ukraine's parliament. Pro EU and anti government demonstrators clashed with police in the Ukrainian capitol Kiev on Tuesday with media reports saying that at least 5 people were killed during the confrontations. A short distance away is Independence Square, which has been the center of a protest movement for approximately 3 months and has been dubbed the Euro Maidan (Euro Square) by the demonstrators. The protest movement began in November after the Ukrainian government said it would not sign an EU Association Agreement that would have brought the nation closer to the European Union.

KIEV, UKRAINE, FEBRUARY 18, 2014: A man throws a piece of cobble stone towards police lines in front of a burning vehicles and tires on Institutska Street near Ukraine's parliament. Pro EU and anti government demonstrators clashed with police in the Ukrainian capitol Kiev on Tuesday with media reports saying that at least 5 people were killed during the confrontations. A short distance away is Independence Square, which has been the center of a protest movement for approximately 3 months and has been dubbed the Euro Maidan (Euro Square) by the demonstrators. The protest movement began in November after the Ukrainian government said it would not sign an EU Association Agreement that would have brought the nation closer to the European Union.

KIEV, UKRAINE, FEBRUARY 18, 2014: Volunteer medics and demonstrators care for a police officer after he was wounded on Institutska Street near Ukraine's parliament. Pro EU and anti government demonstrators clashed with police in the Ukrainian capitol Kiev on Tuesday with media reports saying that at least 5 people were killed during the confrontations. A short distance away is Independence Square, which has been the center of a protest movement for approximately 3 months and has been dubbed the Euro Maidan (Euro Square) by the demonstrators. The protest movement began in November after the Ukrainian government said it would not sign an EU Association Agreement that would have brought the nation closer to the European Union.

KIEV, UKRAINE, FEBRUARY 18, 2014: Volunteer medics and demonstrators care for a police officer after he was wounded on Institutska Street near Ukraine's parliament. Pro EU and anti government demonstrators clashed with police in the Ukrainian capitol Kiev on Tuesday with media reports saying that at least 5 people were killed during the confrontations. A short distance away is Independence Square, which has been the center of a protest movement for approximately 3 months and has been dubbed the Euro Maidan (Euro Square) by the demonstrators. The protest movement began in November after the Ukrainian government said it would not sign an EU Association Agreement that would have brought the nation closer to the European Union.

Anti-government protesters clash with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked the large opposition camp in Ukraine's capital that has been the center of nearly three months of anti-government protests on Tuesday, after at least nine people were killed in street clashes. (AP Photo/Sergei Chuzavkov)

Anti-government protesters clash with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked the large opposition camp in Ukraine's capital that has been the center of nearly three months of anti-government protests on Tuesday, after at least nine people were killed in street clashes. (AP Photo/Sergei Chuzavkov)

Anti-government protesters clash with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked the large opposition camp in Ukraine's capital that has been the center of nearly three months of anti-government protests on Tuesday, after at least nine people were killed in street clashes. (AP Photo/Sergei Chuzavkov)

Anti-government protesters clash with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked the large opposition camp in Ukraine's capital that has been the center of nearly three months of anti-government protests on Tuesday, after at least nine people were killed in street clashes. (AP Photo/Sergei Chuzavkov)

Anti-government protesters clash with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked the large opposition camp in Ukraine's capital that has been the center of nearly three months of anti-government protests on Tuesday, after at least nine people were killed in street clashes. (AP Photo/Sergei Chuzavkov)

Anti-government protesters clash with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked the large opposition camp in Ukraine's capital that has been the center of nearly three months of anti-government protests on Tuesday, after at least nine people were killed in street clashes. (AP Photo/Sergei Chuzavkov)

Monuments to Kiev's founders burn as anti-government protesters clash with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Tuesday, Feb. 18, 2014. Thousands of police armed with stun grenades and water cannons attacked the large opposition camp in Ukraine's capital on Tuesday that has been the center of nearly three months of anti-government protests after at least nine people were killed in street clashes. (AP Photo/Efrem Lukatsky), APTOPIX

Anti-government protesters clash with police in front of the Ukrainian Parliment in Kiev on February 18, 2014. Police on Tuesday fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO / SERGEI SUPINSKY

Anti-government protesters clash with police in front of the Ukrainian Parliment in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

Anti-government protesters clash with police in front of the Ukrainian Parliment in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

Anti-government protesters clash with police in front of the Ukrainian Parliment in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

Anti-government protesters clash with police in front of the Ukrainian Parliment in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

Anti-government protesters throw rocks during clashes with police in front of the Ukrainian Parliment in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

Anti-government protesters throw rocks during clashes with police in front of the Ukrainian Parliment in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

Anti-government protesters throw rocks during clashes with police in front of the Ukrainian Parliment in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

Anti-government protesters throw rocks during clashes with police in front of the Ukrainian Parliment in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

Anti-government protesters clash with police in front of the Ukrainian Parliment in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

Anti-government protesters clash with police in front of the Ukrainian Parliment in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

Anti-government protesters clash with police in front of the Ukrainian Parliment in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

A young anti-government protester looks on during clashes with police in front of the Ukrainian Parliment in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

Anti-government protesters clash with riot police in central Kiev on February 18, 2014. Police on February 18 fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO / SERGEI SUPINSKY

Anti-government protesters clash with riot police in central Kiev on February 18, 2014. Police on February 18 fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO / SERGEI SUPINSKY

Anti-government proteters clash with the riot police in the center of Kiev on February 18, 2014. Police on February 18 fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO / SERGEI SUPINSKI

Anti-government protesters clash with the riot police in the center of Kiev on February 18, 2014. Police on February 18 fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO / SERGEI SUPINSKI

Anti-government protesters "detain" a police officer in the center of Kiev on February 18, 2014. Police on Tuesday fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building.

TOPSHOTS A young anti-government protester looks on during clashes with police in front of the Ukrainian Parliment in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

Anti-government protesters "escort" a police officer in the center of Kiev on February 18, 2014. Police on Tuesday fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building.

Anti-government protesters "detain" a police officer in the center of Kiev on February 18, 2014. Police on Tuesday fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building.

Anti-government protesters and Red Cross workers carry a wounded demonstrator during clashes with police in front of the Ukrainian Parliament in Kiev on February 18, 2014. Police on Tuesday fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO/ SERGEI SUPINSKY

Anti-government protesters and Red Cross workers carry a wounded demonstrator during clashes with police in front of the Ukrainian Parliament in Kiev on February 18, 2014. Police on Tuesday fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO/ SERGEI SUPINSKY

Anti-government protesters clash with police in front of the Ukrainian Parliament in Kiev on February 18, 2014. Police on Tuesday fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO/ SERGEI SUPINSKY

Anti-government protesters clash with police in front of the Ukrainian Parliament in Kiev on February 18, 2014. Police on Tuesday fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO/ SERGEI SUPINSKY

Anti-government protesters clash with police in the center of Kiev on February 18, 2014. Police on Tuesday fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO/ SERGEI SUPINSKY

Anti-government protesters clash with police in in the center of Kiev on February 18, 2014. Police on Tuesday fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO/GENYA SAVILOV

Anti-government protesters throw bricks at riot police during clashes in central Kiev on February 18, 2014. Police on February 18 fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO/ SERGEI SUPINSKY

Anti-government protesters clash with riot police in central Kiev on February 18, 2014. Five people died on February 18 as anti-government protesters clashed with security forces in central Kiev, a police spokeswoman said. "Five civilians died as a result of the mass unrest in Kiev," Kiev police department spokeswoman Olga Bilyk told AFP. AFP PHOTO/GENYA SAVILOV

Anti-government protesters clash with riot police in front of the Parliment in central Kiev on February 18, 2014. Five people died on February 18 as anti-government protesters clashed with security forces in central Kiev, a police spokeswoman said. "Five civilians died as a result of the mass unrest in Kiev," Kiev police department spokeswoman Olga Bilyk told AFP. AFP PHOTO/ SERGEI SUPINSKY

Anti-government protesters clash with the riot police in the center of Kiev on February 18, 2014. Police on February 18 fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO / SERGEI SUPINSKI

A wounded anti-government protester is pictured during clashes with police in Kiev on February 18, 2014. Police on Tuesday fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO / GENYA SAVILOV

Red Cross workers give first aid to policemen wounded during clashes with anti-government protester in Kiev on February 18, 2014. Police on Tuesday fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO/GENYA SAVILOV

TOPSHOTS Anti-government protesters clash with police in front of the Ukrainian Parliament in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

TOPSHOTS Anti-government protesters clash with police in front of the Ukrainian Parliament in Kiev on February 18, 2014. At least three anti-government protesters were killed and some 150 others injured, some seriously, today in fresh clashes between police and demonstrators protesting near Ukraine's parliament building in Kiev. Medics at an opposition-run field hospital said that most of the injuries were caused by stun grenades while some of the 30 people in a serious condition had suffered head injuries, and one person had to have a hand amputated. AFP PHOTO / SERGEI SUPINSKY

Policemen run amid flames during clashes with anti-government protesters in front of the Ukrainian Parliament in Kiev on February 18, 2014. Police on Tuesday fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building. AFP PHOTO/ ANATOLII STEPANOV

TOPSHOTS Anti-government protesters "detain" a police officer in the center of Kiev on February 18, 2014. Police on Tuesday fired rubber bullets at stone-throwing protesters as they demonstrated close to Ukraine's parliament in Kiev, an AFP reporter at the scene said. Police also responded with smoke bombs after protesters hurled paving stones at them as they sought to get closer to the heavily-fortified parliament building.