Head of the pro-Russian separatists government Denis Pushilin speaks during a rally in Donetsk, Eastern Ukraine, April 27, 2014. U.S. President Barack Obama on Sunday said the United States and Europe... more 
Head of the pro-Russian separatists government Denis Pushilin speaks 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) less 
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Reuters | Photo By BAZ RATNER / REUTERS
Sun, Apr 27, 2014 12:12 PM EDT