Activists hold placards depicting Ukrainian President Poroshenko and Russian President Vladimir Putin during a rally calling for the ousting of Ukrainian President Petro Poroshenko organized by "Movement of The New Forces" of former Georgian President Mikheil Saakashvili in Kiev on March 18, 2018. / AFP PHOTO / Genya SAVILOV

Activists hold placards depicting Ukrainian President Poroshenko and Russian President Vladimir Putin during a rally calling for the ousting of Ukrainian President Petro Poroshenko organized by "Movement of The New Forces" of former Georgian President Mikheil Saakashvili in Kiev on March 18, 2018. / AFP PHOTO / Genya SAVILOV

Activists hold placards depicting Russian President Vladimir Putin during a rally calling for the ousting of the Ukrainian President organized by "Movement of The New Forces" which is led by former Georgian President Mikheil Saakashvili in Kiev on March 18, 2018. / AFP PHOTO / Genya SAVILOV

Activists wave flags and shout slogans during a rally calling for the ousting of the Ukrainian President organized by "Movement Of The New Forces" which is led by former Georgian President Saakashvili in Kiev on March 18, 2018. Russians were voting on March 18, 2018 in an election set to hand President Vladimir Putin a fourth Kremlin term but slammed by the opposition as a sham as tensions with Britain escalated over the poisoning of a former Russian double agent. / AFP PHOTO / Genya SAVILOV

An activist holds placards depicting Russian President Vladimir Putin during a rally calling for the ousting of the Ukrainian President organized by "Movement Of The New Forces" which is led by former Georgian President Saakashvili in Kiev on March 18, 2018. Russians were voting on March 18, 2018 in an election set to hand President Vladimir Putin a fourth Kremlin term but slammed by the opposition as a sham as tensions with Britain escalated over the poisoning of a former Russian double agent. / AFP PHOTO / Genya SAVILOV

A protester dismantles metal construction during a rally calling for the ousting of the Ukrainian President organized by "Movement Of The New Forces" which is led by former Georgian President Saakashvili in Kiev on March 18, 2018. This metal construction was installed a few days before to decorate the Independence Square in central Kiev. Russians were voting on March 18, 2018 in an election set to hand President Vladimir Putin a fourth Kremlin term but slammed by the opposition as a sham as tensions with Britain escalated over the poisoning of a former Russian double agent. / AFP PHOTO / Genya SAVILOV

Activists hold a placard depicting Ukrainian President Poroshenko during a rally calling for the ousting of the Ukrainian President organized by "Movement Of The New Forces" which is led by former Georgian President Saakashvili in Kiev on March 18, 2018. Russians were voting on March 18, 2018 in an election set to hand President Vladimir Putin a fourth Kremlin term but slammed by the opposition as a sham as tensions with Britain escalated over the poisoning of a former Russian double agent. / AFP PHOTO / Genya SAVILOV

Protesters dismantle metal construction during a rally calling for the ousting of the Ukrainian President organized by "Movement Of The New Forces" which is led by former Georgian President Saakashvili in Kiev on March 18, 2018. This metal construction was installed a few days before to decorate the Independence Square in central Kiev. Russians were voting on March 18, 2018 in an election set to hand President Vladimir Putin a fourth Kremlin term but slammed by the opposition as a sham as tensions with Britain escalated over the poisoning of a former Russian double agent. / AFP PHOTO / Genya SAVILOV

Protesters dismantle metal construction during a rally calling for the ousting of the Ukrainian President organized by "Movement Of The New Forces" which is led by former Georgian President Saakashvili in Kiev on March 18, 2018. This metal construction was installed a few days before to decorate the Independence Square in central Kiev. Russians were voting on March 18, 2018 in an election set to hand President Vladimir Putin a fourth Kremlin term but slammed by the opposition as a sham as tensions with Britain escalated over the poisoning of a former Russian double agent. / AFP PHOTO / Genya SAVILOV

Protesters dismantle a metal construction during a rally calling for the ousting of the Ukrainian President organized by "Movement Of The New Forces" which is led by former Georgian President Saakashvili in Kiev on March 18, 2018. This metal construction was installed a few days before to decorate the Independence Square in central Kiev. Russians were voting on March 18, 2018 in an election set to hand President Vladimir Putin a fourth Kremlin term but slammed by the opposition as a sham as tensions with Britain escalated over the poisoning of a former Russian double agent. / AFP PHOTO / Genya SAVILOV

Protesters dismantle a metal construction during a rally calling for the ousting of the Ukrainian President organized by "Movement Of The New Forces" which is led by former Georgian President Saakashvili in Kiev on March 18, 2018. This metal construction was installed a few days before to decorate the Independence Square in central Kiev. Russians were voting on March 18, 2018 in an election set to hand President Vladimir Putin a fourth Kremlin term but slammed by the opposition as a sham as tensions with Britain escalated over the poisoning of a former Russian double agent. / AFP PHOTO / Genya SAVILOV