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

Policemen try to avoid flames from molotov cocktails 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

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

Protesters clash 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

Protesters clash 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

Police clash 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

Police clash 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 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

Anti-government protestors 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

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

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 BOIKO

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 BOIKO

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 BOIKO

Protesters 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

Burnt out vehicles remain after protesters clashes withpolice 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

Kiev, Ukraine. At least six people died Tuesday in protests in Kiev, officials said. The casualties occurred after protesters set fire to the headquarters of the ruling Party of Regions and as violence roiled the capital for the first time in more than two weeks. The opposition confirmed five of the deaths -- three near parliament and two near a metro station; the Interior Ministry said a policeman died in an ambulance en route to a hospital.

Kiev, Ukraine. At least six people died Tuesday in protests in Kiev, officials said. The casualties occurred after protesters set fire to the headquarters of the ruling Party of Regions and as violence roiled the capital for the first time in more than two weeks. The opposition confirmed five of the deaths -- three near parliament and two near a metro station; the Interior Ministry said a policeman died in an ambulance en route to a hospital.

Kiev, Ukraine. At least six people died Tuesday in protests in Kiev, officials said. The casualties occurred after protesters set fire to the headquarters of the ruling Party of Regions and as violence roiled the capital for the first time in more than two weeks. The opposition confirmed five of the deaths -- three near parliament and two near a metro station; the Interior Ministry said a policeman died in an ambulance en route to a hospital.

Kiev, Ukraine. At least six people died Tuesday in protests in Kiev, officials said. The casualties occurred after protesters set fire to the headquarters of the ruling Party of Regions and as violence roiled the capital for the first time in more than two weeks. The opposition confirmed five of the deaths -- three near parliament and two near a metro station; the Interior Ministry said a policeman died in an ambulance en route to a hospital.

Kiev, Ukraine. At least six people died Tuesday in protests in Kiev, officials said. The casualties occurred after protesters set fire to the headquarters of the ruling Party of Regions and as violence roiled the capital for the first time in more than two weeks. The opposition confirmed five of the deaths -- three near parliament and two near a metro station; the Interior Ministry said a policeman died in an ambulance en route to a hospital.

Kiev, Ukraine. At least six people died Tuesday in protests in Kiev, officials said. The casualties occurred after protesters set fire to the headquarters of the ruling Party of Regions and as violence roiled the capital for the first time in more than two weeks. The opposition confirmed five of the deaths -- three near parliament and two near a metro station; the Interior Ministry said a policeman died in an ambulance en route to a hospital.

Kiev, Ukraine. At least six people died Tuesday in protests in Kiev, officials said. The casualties occurred after protesters set fire to the headquarters of the ruling Party of Regions and as violence roiled the capital for the first time in more than two weeks. The opposition confirmed five of the deaths -- three near parliament and two near a metro station; the Interior Ministry said a policeman died in an ambulance en route to a hospital.

Kiev, Ukraine. At least six people died Tuesday in protests in Kiev, officials said. The casualties occurred after protesters set fire to the headquarters of the ruling Party of Regions and as violence roiled the capital for the first time in more than two weeks. The opposition confirmed five of the deaths -- three near parliament and two near a metro station; the Interior Ministry said a policeman died in an ambulance en route to a hospital.

Kiev, Ukraine. At least six people died Tuesday in protests in Kiev, officials said. The casualties occurred after protesters set fire to the headquarters of the ruling Party of Regions and as violence roiled the capital for the first time in more than two weeks. The opposition confirmed five of the deaths -- three near parliament and two near a metro station; the Interior Ministry said a policeman died in an ambulance en route to a hospital.

Kiev, Ukraine. At least six people died Tuesday in protests in Kiev, officials said. The casualties occurred after protesters set fire to the headquarters of the ruling Party of Regions and as violence roiled the capital for the first time in more than two weeks. The opposition confirmed five of the deaths -- three near parliament and two near a metro station; the Interior Ministry said a policeman died in an ambulance en route to a hospital.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.

Police are storming the main protest camp in Ukraine's capital, Kiev, which has been occupied since November. Explosions are taking place, fireworks are being thrown and large fires have broken out in Independence Square, known locally as the Maidan. On Tuesday at least 13 people were killed, including six policemen, in the worst violence seen in weeks. Two key protest leaders have gone to see President Viktor Yanukovych, who has so far refused calls to resign.