Ukrainian soldiers, supported by armoured personnel carriers, man a checkpoint near the town of Slaviansk in eastern Ukraine
Ukrainian soldiers, supported by armoured personnel carriers, man a checkpoint near the town of Slaviansk in eastern Ukraine May 3, 2014. Russia's Foreign Minister Sergei Lavrov has told his U.S. counterpart John Kerry that the U.S. should use its influence to make Ukraine's government immediately stop military operations in south-east Ukraine, the Russian foreign ministry said in a statement on Saturday. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)
A man looks at a burned bus in the town of Kramatorsk in eastern Ukraine
A man looks at a burned bus in the town of Kramatorsk in eastern Ukraine May 3, 2014. Russia's Foreign Minister Sergei Lavrov has told his U.S. counterpart John Kerry that the U.S. should use its influence to make Ukraine's government immediately stop military operations in south-east Ukraine, the Russian foreign ministry said in a statement on Saturday. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CIVIL UNREST)
Ukrainian soldiers, supported by armoured personnel carriers, man a checkpoint near the town of Slaviansk in eastern Ukraine
Ukrainian soldiers, supported by armoured personnel carriers, man a checkpoint near the town of Slaviansk in eastern Ukraine May 3, 2014. Russia's Foreign Minister Sergei Lavrov has told his U.S. counterpart John Kerry that the U.S. should use its influence to make Ukraine's government immediately stop military operations in south-east Ukraine, the Russian foreign ministry said in a statement on Saturday. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CIVIL UNREST)
A man looks at a burned bus in the town of Kramatorsk in eastern Ukraine
A man looks at a burned bus in the town of Kramatorsk in eastern Ukraine May 3, 2014. Russia's Foreign Minister Sergei Lavrov has told his U.S. counterpart John Kerry that the U.S. should use its influence to make Ukraine's government immediately stop military operations in south-east Ukraine, the Russian foreign ministry said in a statement on Saturday. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CIVIL UNREST)
People walk past burned buses in the town of Kramatorsk in eastern Ukraine
People walk past burned buses in the town of Kramatorsk in eastern Ukraine May 3, 2014. Russia's Foreign Minister Sergei Lavrov has told his U.S. counterpart John Kerry that the U.S. should use its influence to make Ukraine's government immediately stop military operations in south-east Ukraine, the Russian foreign ministry said in a statement on Saturday. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CIVIL UNREST)
Civilians queue for bread at a shop at the town of Slaviansk in eastern Ukraine
Civilians queue for bread at a shop in the town of Slaviansk in eastern Ukraine May 3, 2014. Russia's Foreign Minister Sergei Lavrov has told his U.S. counterpart John Kerry that the U.S. should use its influence to make Ukraine's government immediately stop military operations in south-east Ukraine, the Russian foreign ministry said in a statement on Saturday. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CIVIL UNREST)
Men walk past burned buses in the town of Kramatorsk in eastern Ukraine
Men walk past burned buses in the town of Kramatorsk in eastern Ukraine May 3, 2014. Russia's Foreign Minister Sergei Lavrov has told his U.S. counterpart John Kerry that the U.S. should use its influence to make Ukraine's government immediately stop military operations in south-east Ukraine, the Russian foreign ministry said in a statement on Saturday. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CIVIL UNREST)
A pro-Russian man shows bullet casings that he says were shot by Ukrainian troops near the town of Slaviansk in eastern Ukraine
A pro-Russian man shows bullet casings that he says were shot by Ukrainian troops near the town of Slaviansk in eastern Ukraine May 3, 2014. Russia's Foreign Minister Sergei Lavrov has told his U.S. counterpart John Kerry that the U.S. should use its influence to make Ukraine's government immediately stop military operations in south-east Ukraine, the Russian foreign ministry said in a statement on Saturday. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CIVIL UNREST)
A Ukrainian soldier stands guard at a checkpoint near a Ukrainian airbase in Kramatorsk, in eastern Ukraine
A Ukrainian soldier stands guard at a checkpoint near a Ukrainian airbase in Kramatorsk, in eastern Ukraine May 3, 2014. Ukrainian forces have retaken the security service headquarters in the eastern town of Kramatorsk, south of rebel stronghold Slaviansk, the country's Interior Ministry said on Saturday. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST)
A woman walks past Ukrainian soldiers at a checkpoint near a Ukrainian airbase in Kramatorsk, in eastern Ukraine
A woman walks past Ukrainian soldiers at a checkpoint near a Ukrainian airbase in Kramatorsk, in eastern Ukraine May 3, 2014. Ukrainian forces have retaken the security service headquarters in the eastern town of Kramatorsk, south of rebel stronghold Slaviansk, the country's Interior Ministry said on Saturday. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST)