Supporters of former Georgian president clash with police as they attempt to block the police van in which he is transported after being arrested, in downtown Kiev on December 5, 2017. Ukrainian security services on Tuesday arrested former Georgian president Mikheil Saakashvili after he climbed onto the roof of his apartment building and addressed supporters during a police raid. The Ukrainian Security Service (SBU) said Saakashvili had been arrested on charges of assisting criminal organisations. / AFP PHOTO / Sergei SUPINSKY