TOPSHOTS Anti-government protetsers 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

TOPSHOTS 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

TOPSHOTS A photo taken on Febraury 18, 2014 shows a riot police whose helmet is burning, shielding himself during clashes with anti-government protesters in central Kiev. At least five people were killed and scores injured on February 18 as anti-government protestors battled riot police in Kiev in the first outbreak of violence in weeks. Police said five civilians have died in clashes that prompted the city to shut down the subway system and issued a grave warning to protesters, with riot police troops massing near the Independence Square protest hub. AFP PHOTO/GENYA SAVILOV

TOPSHOTS An opposition demonstrator holds a Molotov cocktail during clashes with police in Kiev on February 18, 2014. Opposition leader Vitali Klitschko on Tuesday urged women and children to leave the opposition's main protest camp on Kiev's Independence Square, known as Maidan, as riot police massed nearby. "We ask women and children to quit Maidan as we cannot rule out the possibility that they will storm (the camp)," the former heavyweight boxing champion told protestors on the square. AFP PHOTO / PIERO QUARANTA

TOPSHOTS Opposition demonstrators stand in front of burning barricades during clashes with police in Kiev on February 18, 2014. Opposition leader Vitali Klitschko on Tuesday urged women and children to leave the opposition's main protest camp on Kiev's Independence Square, known as Maidan, as riot police massed nearby. "We ask women and children to quit Maidan as we cannot rule out the possibility that they will storm (the camp)," the former heavyweight boxing champion told protestors on the square. AFP PHOTO / PIERO QUARANTA

TOPSHOTS Opposition demonstrators stand near burning barricades during clashes with police in Kiev on February 18, 2014. Opposition leader Vitali Klitschko on Tuesday urged women and children to leave the opposition's main protest camp on Kiev's Independence Square, known as Maidan, as riot police massed nearby. "We ask women and children to quit Maidan as we cannot rule out the possibility that they will storm (the camp)," the former heavyweight boxing champion told protestors on the square. AFP PHOTO / PIERO QUARANTA

TOPSHOTS 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 Opposition demonstrators evacuate a wounded protester during clashes with police in Kiev on February 18, 2014. Opposition leader Vitali Klitschko on Tuesday urged women and children to leave the opposition's main protest camp on Kiev's Independence Square, known as Maidan, as riot police massed nearby. "We ask women and children to quit Maidan as we cannot rule out the possibility that they will storm (the camp)," the former heavyweight boxing champion told protestors on the square. AFP PHOTO / PIERO QUARANTA

TOPSHOTS Anti-government demonstrators stand on barricades during clashes with riot police in Kiev on February 18, 2014. Opposition leader Vitali Klitschko on February 18 urged women and children to leave the opposition's main protest camp on Kiev's Independence Square, known as Maidan, as riot police massed nearby. "We ask women and children to quit Maidan as we cannot rule out the possibility that they will storm (the camp)," the former heavyweight boxing champion told protestors on the square. AFP PHOTO / SANDRO MADDALENA

Head of UDAR (Punch) party Vitali Klitschko together with other anti-government protesters carry a man wounded during a clash 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/ YURY KIRNICHNY

Policemen carry a colleague wounded during clashes with anti-government protesters 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/ YURY KIRNICHNY

Anti-government protesters clash 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/ YURY KIRNICHNY

A young anti-government protester takes part in clash 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/ ANDREW KRAVCHENKO

Anti-government protesters clash with riot police in Kiev on February 18, 2014. Ukrainian riot police approached Kiev's main opposition camp on February 18 after at least seven people were killed in the bloodiest day of clashes in nearly three months of protests. Opposition leader Vitali Klitschko called on women and children to quit the encampment on Kiev's iconic Independence Square over fears of a possible police assault. But some 25,000 protestors remained on the square after the expiry of a 6:00pm (16.00 GMT) ultimatum from security forces demanding calm be restored. AFP PHOTO/ ANDREW KRAVCHENKO

Anti-government protesters clash 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/ ANDREW KRAVCHENKO

Anti-government protesters clash 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/ ANDREW KRAVCHENKO

Anti-government protesters clash 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/ ANATOLII STEPANOV

Anti-government protesters clash 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/ ANATOLII STEPANOV

Police throw back stones during clashes with anti-government protesters 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

Anti-government protesters clash 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/ ANATOLII STEPANOV

Anti-government protesters clash 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/ ANATOLII STEPANOV

A policeman aims during clash with anti-government protesters in Kiev on February 18, 2014. Ukrainian anti-government protestors on Tuesday took back control of Kiev's city hall following bloody clashes with riot police just two days after vacating the building, an AFP correspondent at the scene said. Protesters guarded the entrance and some 30 activists were setting up a first aid point inside the building, which the opposition had left on Sunday as part of an amnesty deal with the authorities. AFP PHOTO/ ANATOLII STEPANOV

A policeman checks his rifle during clashes with anti-government protesters in Kiev on February 18, 2014. Ukrainian anti-government protestors on Tuesday took back control of Kiev's city hall following bloody clashes with riot police just two days after vacating the building, an AFP correspondent at the scene said. Protesters guarded the entrance and some 30 activists were setting up a first aid point inside the building, which the opposition had left on Sunday as part of an amnesty deal with the authorities. AFP PHOTO/ ANATOLII STEPANOV

Policemen stand in front of the Ukrainian parliament building during clashes with anti-government protesters in Kiev on February 18, 2014. Ukrainian anti-government protestors on Tuesday took back control of Kiev's city hall following bloody clashes with riot police just two days after vacating the building, an AFP correspondent at the scene said. Protesters guarded the entrance and some 30 activists were setting up a first aid point inside the building, which the opposition had left on Sunday as part of an amnesty deal with the authorities. AFP PHOTO/ ANATOLII STEPANOV

Policemen stand in front of the Ukrainian parliament building during clashes with anti-government protesters in Kiev on February 18, 2014. Ukrainian anti-government protestors on Tuesday took back control of Kiev's city hall following bloody clashes with riot police just two days after vacating the building, an AFP correspondent at the scene said. Protesters guarded the entrance and some 30 activists were setting up a first aid point inside the building, which the opposition had left on Sunday as part of an amnesty deal with the authorities. AFP PHOTO/ ANATOLII STEPANOV

Protesters clash with anti-government protesters in Kiev on February 18, 2014. Ukrainian anti-government protestors on Tuesday took back control of Kiev's city hall following bloody clashes with riot police just two days after vacating the building, an AFP correspondent at the scene said. Protesters guarded the entrance and some 30 activists were setting up a first aid point inside the building, which the opposition had left on Sunday as part of an amnesty deal with the authorities. AFP PHOTO/ ANATOLII STEPANOV

Anti-government protesters clash 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/ ANATOLII STEPANOV

Policeman evacuate a wounded colleague during clashes with anti-government protesters in Kiev on February 18, 2014. Ukrainian anti-government protestors on Tuesday took back control of Kiev's city hall following bloody clashes with riot police just two days after vacating the building, an AFP correspondent at the scene said. Protesters guarded the entrance and some 30 activists were setting up a first aid point inside the building, which the opposition had left on Sunday as part of an amnesty deal with the authorities. AFP PHOTO/ ANATOLII STEPANOV

Protesters stand among smoke during clashes with police in Kiev on February 18, 2014.Ukrainian anti-government protestors on Tuesday took back control of Kiev's city hall following bloody clashes with riot police just two days after vacating the building, an AFP correspondent at the scene said. Protesters guarded the entrance and some 30 activists were setting up a first aid point inside the building, which the opposition had left on Sunday as part of an amnesty deal with the authorities. AFP PHOTO/ ANATOLII STEPANOV

Protesters clash with riot 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/ ANATOLII BOIKO

Riot police clash with anti-government protesters in Kiev on February 18, 2014. Ukraine's prosecutor-general on February 18 warned he would seek to impose the "harshest punishment" on those behind an outburst of violence in Kiev. "The prosecutor-general will demand the harshest punishments for those who provoked people to carry out today's actions, those who organised it and those who directed it," prosecutor-general Viktor Pshonka said in a statement. AFP PHOTO/ ANATOLII BOIKO

A riot police prepares to throw a brick at anti-government protesters during clashes in central Kiev on February 18, 2014. Ukraine's prosecutor-general on February 18 warned he would seek to impose the "harshest punishment" on those behind an outburst of violence in Kiev. "The prosecutor-general will demand the harshest punishments for those who provoked people to carry out today's actions, those who organised it and those who directed it," prosecutor-general Viktor Pshonka said in a statement. AFP PHOTO/ ANATOLII BOIKO

Anti-government protesters clash with riot police in central Kiev on February 18, 2014. Ukraine's prosecutor-general on February 18 warned he would seek to impose the "harshest punishment" on those behind an outburst of violence in Kiev. "The prosecutor-general will demand the harshest punishments for those who provoked people to carry out today's actions, those who organised it and those who directed it," prosecutor-general Viktor Pshonka said in a statement. AFP PHOTO/ ANATOLII BOIKO

Policemen aim during clashes with anti-government protesters in Kiev on February 18, 2014. Ukraine's prosecutor-general on Tuesday warned he would seek to impose the "harshest punishment" on those behind an outburst of violence in Kiev. "The prosecutor-general will demand the harshest punishments for those who provoked people to carry out today's actions, those who organised it and those who directed it," prosecutor-general Viktor Pshonka said in a statement. . AFP PHOTO/ ANATOLII BOIKO

Riot police aim at anti-government protesters during clashes in central Kiev on February 18, 2014. Fresh clashes rocked Kiev's main protest camp on Independence Square on February 18 with riot police confronting anti-government protestors, an AFP reporter at the scene said. Protesters fired fireworks at security forces as riot police and water cannon moved towards opposition positions. AFP PHOTO/ ANATOLII BOIKO

Anti-government protesters clash with riot police in central Kiev on February 18, 2014. Fresh clashes rocked Kiev's main protest camp on Independence Square on February 18 with riot police confronting anti-government protestors, an AFP reporter at the scene said. Protesters fired fireworks at security forces as riot police and water cannon moved towards opposition positions. AFP PHOTO/ ANATOLII BOIKO

TOPSHOTS Anti-government protesters carry a wounded man during clashes with riot police in Kiev on February 18, 2014. Ukrainian riot police approached Kiev's main opposition camp on February 18 after at least seven people were killed in the bloodiest day of clashes in nearly three months of protests. Opposition leader Vitali Klitschko called on women and children to quit the encampment on Kiev's iconic Independence Square over fears of a possible police assault. But some 25,000 protestors remained on the square after the expiry of a 6:00pm (16.00 GMT) ultimatum from security forces demanding calm be restored. AFP PHOTO/ YURY KIRNICHNY

TOPSHOTS Policemen carry a colleague wounded during clashes with anti-government protesters in Kiev on February 18, 2014. Ukrainian riot police approached Kiev's main opposition camp on February 18 after at least seven people were killed in the bloodiest day of clashes in nearly three months of protests. Opposition leader Vitali Klitschko called on women and children to quit the encampment on Kiev's iconic Independence Square over fears of a possible police assault. But some 25,000 protestors remained on the square after the expiry of a 6:00pm (16.00 GMT) ultimatum from security forces demanding calm be restored. AFP PHOTO/ YURY KIRNICHNY

TOPSHOTS Anti-government protesters clash 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/ ANATOLII STEPANOV

TOPSHOTS CORRECTING TYPO Protesters clash with riot police in Kiev on February 18, 2014. Ukraine's prosecutor-general on Tuesday warned he would seek to impose the "harshest punishment" on those behind an outburst of violence in Kiev. "The prosecutor-general will demand the harshest punishments for those who provoked people to carry out today's actions, those who organised it and those who directed it," prosecutor-general Viktor Pshonka said in a statement. AFP PHOTO/ ANATOLII BOIKO

Riot police clash with anti-government protesters in central Kiev on February 18, 2014. Police on February 18 began an assault on the main anti-government protest camp in Kiev after a day of bloody clashes, AFP journalists at the scene said. Police warned women and children to leave the area as they moved on opposition positions with water cannon while protestors responded by throwing Molotov cocktails and setting fire to part of the tent encampment. AFP PHOTO/ ANATOLII BOIKO

Anti-government protesters clash with riot police in central Kiev on February 18, 2014. Police on February 18 began an assault on the main anti-government protest camp in Kiev after a day of bloody clashes, AFP journalists at the scene said. Police warned women and children to leave the area as they moved on opposition positions with water cannon while protestors responded by throwing Molotov cocktails and setting fire to part of the tent encampment. AFP PHOTO/ ANATOLII BOIKO

Riot police aim at anti-government protesters during clashes in central Kiev on February 18, 2014. Police on Febraury 18 began an assault on the main anti-government protest camp in Kiev after a day of bloody clashes, AFP journalists at the scene said. Police warned women and children to leave the area as they moved on opposition positions with water cannon while protestors responded by throwing Molotov cocktails and setting fire to part of the tent encampment. AFP PHOTO/ ANATOLII BOIKO

Police clash with anti-government protesters 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 BOIKO

Police clash with anti-government protesters 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 BOIKO

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Kiev's Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ GENYA SAVILOV

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ SERGEI SUPINSKY

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ SERGEI SUPINSKY

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ GENYA SAVILOV

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ GENYA SAVILOV

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ GENYA SAVILOV

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ GENYA SAVILOV

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ GENYA SAVILOV

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ GENYA SAVILOV

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main protest camp in Kiev late Tuesday as police stormed it during the deadliest day of violence in three months of demonstrations, in which at least 11 people were killed and alarm rippled across Europe and beyond. AFP PHOTO/ SERGEI SUPINSKY

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ SERGEI SUPINSKY

Anti-government protesters clash with the police during their storm of the Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ SERGEI SUPINSKY

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ SERGEI SUPINSKY

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ SERGEI SUPINSKY

Protesters clash with police in Kiev on February 18, 2014. Ukrainian riot police stormed the main opposition camp in Kiev Tuesday after clashes left at least seven dead in the bloodiest day in three months of protests, triggering international alarm. TOPSHOTS/AFP PHOTO/ ANATOLII BOIKO

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. TOPSHOTS/AFP PHOTO/GENYA SAVILOV

Riot police shield themselves during clashes with protesters 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

TOPSHOTS Riot police shield themselves during clashes with protesters 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 the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Kiev's Independence Square as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/SERGEI SUPINSKY

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Kiev's Independence Square as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/SERGEI SUPINSKY

Anti-government protesters clash with the police (L) during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Kiev's Independence Square as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/SERGEI SUPINSKY

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Kiev's Independence Square as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/SERGEI SUPINSKY

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Kiev's Independence Square as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/SERGEI SUPINSKY

Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Kiev's Independence Square as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/SERGEI SUPINSKY

TOPSHOTS Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Kiev's Independence Square as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/SERGEI SUPINSKY

TOPSHOTS Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Kiev's Independence Square as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/SERGEI SUPINSKY

TOPSHOTS Riot police face anti-government protesters during clashes during the storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Kiev's Independence Square as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/SERGEI SUPINSKY

TOPSHOTS Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ GENYA SAVILOV

TOPSHOTS Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ GENYA SAVILOV

TOPSHOTS Anti-government protesters clash with the police during their storming of Independence Square in Kiev on February 18, 2014. Flames engulfed the main protest camp in Kiev late Tuesday as police stormed it during the deadliest day of violence in three months of demonstrations, in which at least 11 people were killed and alarm rippled across Europe and beyond. AFP PHOTO/ SERGEI SUPINSKY

TOPSHOTS Anti-government protesters clash with the police during their storming ofthe Independence Square in Kiev on February 18, 2014. Flames engulfed the main anti-government protest camp on Independence Square on Tuesday as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades from several directions, hurling stun grenades and using water cannon to clear protestors. AFP PHOTO/ SERGEI SUPINSKY

Kiev, 19/02/2014-- Workers clean up garbage after clashes between the riot police and protesters in Kiev, Ukraine on Fevbruar 19, 2014. On tuesday and in the early hours of Wednesday, at least 26 people died in street clashes between the riot police and protesters in Kiev. The confrontation also left 263 protesters and 342 officers injured.

Kiev, 19/02/2014-- Workers clean up garbage after clashes between the riot police and protesters in Kiev, Ukraine on Fevbruar 19, 2014. On tuesday and in the early hours of Wednesday, at least 26 people died in street clashes between the riot police and protesters in Kiev. The confrontation also left 263 protesters and 342 officers injured.

TOPSHOTS Maidan self-defence activists fight during a drill in a camp of the Ukrainian anti-government opposition on Independence Square in Kiev on February 17, 2014. Ukraine on February 17 granted amnesty to opposition protesters after they agreed to end an occupation of Kiev's city hall and other public buildings, while opposition leaders were set to meet German Chancellor Angela Merkel to ask for EU assistance.AFP PHOTO/ SERGEI SUPINSKY

Protestors abandon the municipal building of Kiev and Grushevskogo Street where close combats happened between Ukrainian security forces and the protestors, after release of the last protestor under custody, on February 16, 2014 in Kiev, Ukraine. Police wait during evacuation procedure. Photo by Artem Slipachuk/AA/ABACAPRESS.COM

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)

Medicals help a badly wounded protester, who died a few moments later, during clashes with police in Kiev's Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine, Thursday, Feb. 20, 2014. Fierce clashes between police and protesters, some including gunfire, shattered a brief truce in Ukraine's besieged capital Thursday, killing numerous people. The deaths came in a new eruption of violence just hours after the country's embattled president and the opposition leaders demanding his resignation called for a truce and negotiations to try to resolve Ukraine's political crisis. (AP Photo/Efrem Lukatsky)