Protesters, right, use tear gas as they clash with police during a rally outside the Supreme Rada in Kiev, Ukraine, Tuesday, Jan. 16, 2018. At least one policeman has been injured and several protesters have been detained after scuffles outside the Ukrainian parliament to protest a new law governing the areas in the country's east under separatist control. (AP Photo/Andrew Kravchenko)

Protesters burn tires while clashing with police during a rally outside the Supreme Rada in Kiev, Ukraine, Tuesday, Jan. 16, 2018. At least one policeman has been injured and several protesters have been detained during scuffles outside the Ukrainian parliament to protest a new law governing the areas in the country's east under separatist control. (AP Photo/Andrew Kravchenko)

Protesters with a Ukrainian national flag burn tires while clashing with police during a rally outside the Supreme Rada in Kiev, Ukraine, Tuesday, Jan. 16, 2018. At least one policeman has been injured and several protesters have been detained during scuffles outside the Ukrainian parliament to protest a new law governing the areas in the country's east under separatist control. (AP Photo/Andrew Kravchenko)

Supporters of former the Georgian president clash with police officers after they set tyres on fire in their tent camp in front of the Ukrainian Parliament in Kiev on January 16, 2018. Former Georgian President Mikheil Saakashvili, 49, who entered Ukrainian politics after serving as president of Georgia, was arrested in December 2017 in Kiev, accused of trying to stage a Russia-sponsored coup, but a court released him for the duration of the probe. / AFP PHOTO / ANDREW KRAVCHENKO

Supporters of former the Georgian president clash with police officers after they set tyres on fire in their tent camp in front of the Ukrainian Parliament in Kiev on January 16, 2018. Former Georgian President Mikheil Saakashvili, 49, who entered Ukrainian politics after serving as president of Georgia, was arrested in December 2017 in Kiev, accused of trying to stage a Russia-sponsored coup, but a court released him for the duration of the probe. / AFP PHOTO / ANDREW KRAVCHENKO

Supporters of former the Georgian president clash with police officers after they set tyres on fire in their tent camp in front of the Ukrainian Parliament in Kiev on January 16, 2018. Former Georgian President Mikheil Saakashvili, 49, who entered Ukrainian politics after serving as president of Georgia, was arrested in December 2017 in Kiev, accused of trying to stage a Russia-sponsored coup, but a court released him for the duration of the probe. / AFP PHOTO / ANDREW KRAVCHENKO

Supporters of former the Georgian president clash with police officers after they set tyres on fire in their tent camp in front of the Ukrainian Parliament in Kiev on January 16, 2018. Former Georgian President Mikheil Saakashvili, 49, who entered Ukrainian politics after serving as president of Georgia, was arrested in December 2017 in Kiev, accused of trying to stage a Russia-sponsored coup, but a court released him for the duration of the probe. / AFP PHOTO / ANDREW KRAVCHENKO

Supporters of former the Georgian president clash with police officers after they set tyres on fire in their tent camp in front of the Ukrainian Parliament in Kiev on January 16, 2018. Former Georgian President Mikheil Saakashvili, 49, who entered Ukrainian politics after serving as president of Georgia, was arrested in December 2017 in Kiev, accused of trying to stage a Russia-sponsored coup, but a court released him for the duration of the probe. / AFP PHOTO / ANDREW KRAVCHENKO

Activists burn the Russian flag and St.George ribbons, the symbols of the so called "Russian world" as they call for the deputies to recognise Russia as an aggressor state during a rally in front of the Ukrainian parliament in Kiev, on January 16, 2017. Lawmakers of the Ukrainian Parliament on January 16, are debating a bill "On the peculiarities of state policy to ensure the state sovereignty of Ukraine in the temporarily occupied territories in Donetsk and Lugansk regions". / AFP PHOTO / Sergei SUPINSKY

Activists protest as they call for the deputies to recognise Russia as an aggressor state during a rally in front of the Ukrainian parliament in Kiev, on January 16, 2017. Lawmakers of the Ukrainian Parliament on January 16, are debating a bill "On the peculiarities of state policy to ensure the state sovereignty of Ukraine in the temporarily occupied territories in Donetsk and Lugansk regions". / AFP PHOTO / Sergei SUPINSKY

Protesters hold a banner depicting the portrait of Russian President Vladimir Putin behind portraits of pro-Russian Ukrainian oligarches and politicians and reading "Faces of revanche", as they call for the deputies to recognise Russia as an aggressor state during a rally in front of the Ukrainian parliament in Kiev, on January 16, 2017. Lawmakers of the Ukrainian Parliament on January 16 are debating a bill "on the peculiarities of state policy to ensure the state sovereignty of Ukraine in the temporarily occupied territories in Donetsk and Lugansk regions". / AFP PHOTO / Sergei SUPINSKY

Activists hold up a banner depicting Russian President Vladimir Putin looking out from behind the pro-Russian Ukrainian oligarches and politicians signed "Faces of revenge" as they call for the deputies to recognise Russia as an aggressor state during a rally in front of the Ukrainian parliament in Kiev, on January 16, 2018. Lawmakers of the Ukrainian Parliament on January 16, are debating a bill "On the peculiarities of state policy to ensure the state sovereignty of Ukraine in the temporarily occupied territories in Donetsk and Lugansk regions". / AFP PHOTO / Sergei SUPINSKY

Police officer stand guard as activists call for the deputies to recognise Russia as an aggressor state during a rally in front of the Ukrainian parliament in Kiev, on January 16, 2018. Lawmakers of the Ukrainian Parliament on January 16, are debating a bill "On the peculiarities of state policy to ensure the state sovereignty of Ukraine in the temporarily occupied territories in Donetsk and Lugansk regions". / AFP PHOTO / Sergei SUPINSKY

Police officers stand guard outside the Ukrainian parliament as protesters take part in a rally and call for the deputies to recognise Russia as an aggressor state in Kiev, on January 16, 2017. Lawmakers of the Ukrainian Parliament on January 16 are debating a bill "on the peculiarities of state policy to ensure the state sovereignty of Ukraine in the temporarily occupied territories in Donetsk and Lugansk regions". / AFP PHOTO / Sergei SUPINSKY