A protester wrapped in a EU flag attends a rally to support EU integration as police stand guard in front of the Ukrainian cabinet of ministers building in Kiev November 25, 2013. (Photo by Gleb Garanich/Reuters)

Wounded Reuters photographer Gleb Garanich, who was injured by riot police, takes pictures as riot police block protesters during a scuffle at a demonstration in support of EU integration at Independence Square in Kiev November 30, 2013. Riot police in the Ukrainian capital Kiev used batons and stun grenades to disperse hundreds of pro-Europe protesters from the city's main Independence Square early on Saturday, witnesses said. (Photo by Reuters/Stringer)

Injured protesters receive medical help in ambulance after Ukrainian riot police broke up a rally demanding the resignation of President Viktor Yanukovych, at the Independence Square in downtown Kiev, Ukraine, on Saturday, November 30, 2013. (Photo by Sergei Chuzavkov/AP Photo)

Protesters try to break through police lines near the presidential administration building during a rally held by supporters of EU integration in Kiev, December 1, 2013. (Photo by Gleb Garanich/Reuters)

Ukrainian protesters carry a poster with a EU flag image during a mass meeting on the European square in Kiev, Ukraine, 26 November 2013. The ongoing pro-European protests in Ukraine threatened to turn violent when scuffles broke out between police and protesters in downtown Kiev. Protesters demanded that the government roll back last week's decision to suspend work on a landmark association agreement with the European Union, calling for President Viktor Yanukovych to sign the deal. (Photo by Sergey Dolzhenko/EPA)

A protestor injured during the night when riot police dispersed protestors in Independence Square, shows his bloodied eye as he gathers with others near the Mikhailovskiy Cathedral in Kiev, Ukraine, 30 November 2013. Riot police dispersed hundreds of protestors, who support the Euro integration of Ukraine, with tear gas and truncheons in a pre-dawn action. (Photo by Sergey Dolzhenko/EPA)

Protesters try to break a line of riot police near the presidential administration building during a rally by EU supporters in Kiev, Ukraine, 01 December 2013. (Photo by Sergey Dolzhenko/EPA)

Protesters build up a barricade in a street around the city's Independent Square in Kiev, Ukraine, early 02 December 2013. More than three thousand protesters spent a night out on the main square of the Ukrainian capital after tens of thousands of Ukrainians had gathered there for another mass protest on 01 December calling for the resignation of President Viktor Yanukovych over his decision to suspend a partnership and trade agreement with the European Union. (Photo by Sergey Dolzhenko/EPA)

Participants of the rally attack an unidentified man (R, front), treated as a provocateur by the rally organizers, in front of the Kiev City State Administration (Kiev City Council) building during a rally held by supporters of EU integration in Kiev, December 1, 2013. Ukraine's interior minister warned tens of thousands of protesters starting a pro-Europe rally in the capital Kiev on Sunday that police would respond if there were mass disturbances. (Photo by Valentyn Ogirenko/Reuters)

Protesters use a wheel loader as they try to break through a police line near the presidential administration building during a rally by EU supporters in Kiev, Ukraine, 01 December 2013. Tens of thousands of Ukrainians gathered in mass protests 01 December calling for the resignation of President Viktor Yanukovych over his decision to suspend a partnership and trade agreement with the European Union. Demonstrators waved Ukrainian and EU flags, and carried signs blaming the government for brutal police tactics against anti-government protesters on 30 November. (Photo by Alexey Furman/EPA/EFE)

Protesters burn flares as they try to break through police lines near the presidential administration building during a rally held by supporters of EU integration in Kiev, December 1, 2013. Ukrainian opposition leader Vitaly Klitschko, addressing hundreds of thousands of protesters in central Kiev, called on President Viktor Yanukovich and his government to resign, saying they had “stolen” Ukraine's dream of European integration. (Photo by Stoyan Nenov/Reuters)

A protester kicks at a barrier set up by police near the presidential administration building during a rally by EU supporters in Kiev, Ukraine, 01 December 2013. (Photo by Alexey Furman/EPA/EFE)

Protesters argue with police trying to convince them to move away from a barrier line near the presidential administration building during a rally by EU supporters in Kiev, Ukraine, 01 December 2013. (Photo by Alexey Furman/EPA/EFE)

Protesters stands on a monument on Independent Square in Kiev, Ukraine, 01 December 2013. Tens of thousands of Ukrainians gathered in mass protests 01 December calling for the resignation of President Viktor Yanukovych over his decision to suspend a partnership and trade agreement with the European Union. (Photo by Filip Singer/EPA/EFE)

Vitaly Klitschko (C), heavyweight boxing champion and UDAR (Punch) party leader, his wife Natalia (R, first row) and Jaroslaw Kaczynski (L, first row), leader of Poland's main opposition Law and Justice Party (PiS), attend a rally held by supporters of EU integration in Kiev, December 1, 2013. Ukrainian opposition leader Vitaly Klitschko, addressing hundreds of thousands of protesters in central Kiev, called on President Viktor Yanukovich and his government to resign, saying they had “stolen” Ukraine's dream of European integration. (Photo by Vasily Fedosenko/Reuters)

Protestors shouts slogans during a demonstration on Independent Square in Kiev, Ukraine, 01 December 2013. (Photo by Filip Singer/EPA/EFE)

Protestors gather for another demonstration on Independent Square in Kiev, Ukraine, 01 December 2013. (Photo by Filip Singer/EPA/EFE)

People react after an explosion, with smoke and fire seen in the foreground, near the presidential administration building during a rally held by supporters of EU integration in Kiev, December 1, 2013. (Photo by Gleb Garanich/Reuters)

An aerial view shows the Maidan Nezalezhnosti (Independence Square) crowded by supporters of EU integration during a rally in Kiev, December 1, 2013. (Photo by Gleb Garanich/Reuters)

Riot police stand guard during a rally held by supporters of EU integration in Kiev, December 1, 2013. (Photo by Gleb Garanich/Reuters)

Ukrainian riot police forms a line to protect a barrier near the presidential administration building during a rally by EU supporters in Kiev, Ukraine, 01 December 2013. (Photo by Alexey Furman/EPA/EFE)

Protesters try to break through police lines near the presidential administration building during a rally held by supporters of EU integration in Kiev, December 1, 2013. (Photo by Stoyan Nenov/Reuters)

People attend a rally held by supporters of EU integration in Kiev, December 1, 2013. (Photo by Gleb Garanich/Reuters)

Protesters try to break through police lines near the presidential administration building during a rally held by supporters of EU integration in Kiev, December 1, 2013. (Photo by Stoyan Nenov/Reuters)

Men kneel down while riot police stand guard near the presidential administration building during a rally held by supporters of EU integration in Kiev, December 1, 2013. (Photo by Gleb Garanich/Reuters)

A man holds a stick as protesters try to break through police lines near the presidential administration building during a rally held by supporters of EU integration in Kiev, December 1, 2013. Hundreds of thousands of Ukrainians shouting “Down with the Gang!” rallied on Sunday against President Viktor Yanukovich's U-turn on Europe and some used a building excavator to try to break through police lines at his headquarters. (Photo by Vasily Fedosenko/Reuters)

People climb up onto a gate near the presidential administration building during a rally held by supporters of EU integration in Kiev, December 1, 2013. (Photo by Gleb Garanich/Reuters)

Protesters try to break a line of riot police near the presidential administration building during a rally by EU supporters in Kiev, Ukraine, 01 December 2013. (Photo by Alexey Furman/EPA/EFE)

A man addresses Interior Ministry members during a rally held by supporters of EU integration in Kiev, December 1, 2013. (Photo by Vasily Fedosenko/Reuters)

A man kneels down while police stand guard near the presidential administration building during a rally held by supporters of EU integration in Kiev, on December 1, 2013. Ukraine's interior minister warned tens of thousands of protesters starting a pro-Europe rally in the capital that police would respond if there were mass disturbances. (Photo by Gleb Garanich/Reuters)

A man throws a flare in the direction of Interior Ministry members during a rally held by supporters of EU integration in Kiev, on December 1, 2013. Ukrainian opposition leaders called for President Viktor Yanukovich and his government to resign at a rally of about 350,000 people, the biggest protest in the capital since the "Orange Revolution" nine years ago. (Photo by Gleb Garanich/Reuters)

A protester collects firewood for heating in downtown Kiev, Ukraine, early Wednesday, December 4, 2013. Ukraine's opposition failed to force out the government with a parliamentary no-confidence vote Tuesday, leaving political tensions unresolved and a potential standoff between protesters and the country's leaders looming. (Photo by Sergei Grits/AP Photo)