The head of the pro-Russian separatists government Denis Pushilin (3rd L) speaks during a news conference in the regional government building in Donetsk, eastern Ukraine April 18, 2014. Armed pro-Russian separatists in eastern Ukraine said on Friday they were not bound by an international deal ordering them to disarm and would not move out of public buildings they have seized until the Kiev government stepped down. REUTERS/Baz Ratner (UKRAINE — Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)