Pro-Russian activists block the entrance to a television station in Donetsk
Pro-Russian activists block the entrance to a television station in Donetsk, eastern Ukraine April 27, 2014. Pro-Russian separatists on Sunday seized control of the offices of regional state television in the eastern Ukrainian city of Donetsk, a Reuters reporter outside the building said. The reporter said four separatists in masks, with truncheons and shields, were standing at the entrance to the building controlling access, while more separatists in camouflage fatigues could be seen inside. REUTERS/Baz Ratner (UKRAINEMEDIA POLITICS - Tags: POLITICS CIVIL UNREST MEDIA)
Ukrainian security men stand guard near a television station that was taken over by pro-Russian activists in Donetsk
Ukrainian security men stand guard near a television station that was taken over by pro-Russian activists in Donetsk, eastern Ukraine April 27, 2014. Pro-Russian separatists on Sunday seized control of the offices of regional state television in the eastern Ukrainian city of Donetsk, a Reuters reporter outside the building said. The reporter said four separatists in masks, with truncheons and shields, were standing at the entrance to the building controlling access, while more separatists in camouflage fatigues could be seen inside. REUTERS/Baz Ratner (UKRAINE - Tags: MEDIA CIVIL UNREST POLITICS)
Pro-Russian activists block the entrance to a television station in Donetsk
Pro-Russian activists block the entrance to a television station in Donetsk, eastern Ukraine April 27, 2014. Pro-Russian separatists on Sunday seized control of the offices of regional state television in the eastern Ukrainian city of Donetsk, a Reuters reporter outside the building said. The reporter said four separatists in masks, with truncheons and shields, were standing at the entrance to the building controlling access, while more separatists in camouflage fatigues could be seen inside. REUTERS/Baz Ratner (UKRAINE - Tags: MEDIA CIVIL UNREST POLITICS)
Pro-Russian activists block the entrance to a television station in Donetsk
Pro-Russian activists block the entrance to a television station in Donetsk, eastern Ukraine April 27, 2014. Pro-Russian separatists on Sunday seized control of the offices of regional state television in the eastern Ukrainian city of Donetsk, a Reuters reporter outside the building said. The reporter said four separatists in masks, with truncheons and shields, were standing at the entrance to the building controlling access, while more separatists in camouflage fatigues could be seen inside. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CIVIL UNREST MEDIA TPX IMAGES OF THE DAY)
Pro-Russian activists block the entrance to a television station in Donetsk
Pro-Russian activists block the entrance to a television station in Donetsk, eastern Ukraine April 27, 2014. Pro-Russian separatists on Sunday seized control of the offices of regional state television in the eastern Ukrainian city of Donetsk, a Reuters reporter outside the building said. The reporter said four separatists in masks, with truncheons and shields, were standing at the entrance to the building controlling access, while more separatists in camouflage fatigues could be seen inside. REUTERS/Baz Ratner (UKRAINE - Tags: MEDIA CIVIL UNREST POLITICS)
Ukrainian armoured personnel carriers stand guard at a checkpoint outside the city of Slaviansk
Ukrainian armoured personnel carriers stand guard at a checkpoint outside the city of Slaviansk April 27, 2014. The leader of separatist rebels holding a group of international observers in the Ukrainian city of Slaviansk said he was scheduled on Sunday to meet a delegation of mediators who were on their way to negotiate the observers' release. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST)
Pro-Russian activists stand in front of a a monument of Soviet leader Lenin during a rally in Donetsk
Pro-Russian activists stand in front of a a monument of Soviet leader Vladimir Lenin during a rally in Donetsk, Eastern Ukraine, April 27, 2014. U.S. President Barack Obama on Sunday said the United States and Europe must join forces to impose sanctions on Russia to stop it destabilising Ukraine, where armed pro-Russian separatists were for a third day holding eight international observers prisoner. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CIVIL UNREST)
Ukrainian soldiers stand guard near an APC at a checkpoint outside the city of Slaviansk
Ukrainian soldiers stand guard near an armored personnel carrier (APC) at a checkpoint outside the city of Slaviansk April 27, 2014. The leader of separatist rebels holding a group of international observers in the Ukrainian city of Slaviansk said he was scheduled on Sunday to meet a delegation of mediators who were on their way to negotiate the observers' release. REUTERS/Gleb Garanich (UKRAINE - Tags: MILITARY POLITICS CIVIL UNREST
Ukrainian soldiers sit on top of an APC at a checkpoint outside the city of Slaviansk
Ukrainian soldiers sit on top of an armoured personnel carrier (APC) at a checkpoint outside the city of Slaviansk April 27, 2014. The leader of separatist rebels holding a group of international observers in the Ukrainian city of Slaviansk said he was scheduled on Sunday to meet a delegation of mediators who were on their way to negotiate the observers' release. REUTERS/Gleb Garanich (UKRAINE - Tags: MILITARY POLITICS CIVIL UNREST)