A pro-Russian separatist guards a checkpoint while walking near burning tyres near the town of Slaviansk
A pro-Russian separatist guards a checkpoint while walking near burning tyres near the town of Slaviansk in eastern Ukraine May 2, 2014. Ukraine launched a "large-scale operation" to retake the eastern town of Slaviansk, pro-Russian separatists there said on Friday, in an escalation of violence in what has become the worst confrontation between Russia and the West since the Cold War. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CIVIL UNREST)
Pro-Russian separatists guard a checkpoint as tyres burn in front of them, near the town of Slaviansk
Pro-Russian separatists guard a checkpoint as tyres burn in front of them, near the town of Slaviansk in eastern Ukraine May 2, 2014. Ukraine launched a "large-scale operation" to retake the eastern town of Slaviansk, pro-Russian separatists there said on Friday, in an escalation of violence in what has become the worst confrontation between Russia and the West since the Cold War. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CIVIL UNREST)
A pro-Russian separatist guards a checkpoint as tyres burn in front of him, near the town of Slaviansk
A pro-Russian separatist guards a checkpoint as tyres burn in front of him, near the town of Slaviansk in eastern Ukraine May 2, 2014. Ukraine launched a "large-scale operation" to retake the eastern town of Slaviansk, pro-Russian separatists there said on Friday, in an escalation of violence in what has become the worst confrontation between Russia and the West since the Cold War. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CIVIL UNREST)
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