Sharqiy Ukrainada vaziyat keskinlashmoqda

Ukrainian troops guard a checkpoint near the town of Slaviansk in eastern Ukraine May 2, 2014. Ukrainian forces attacked the rebel-held city of Slaviansk before dawn on Friday and pro-Russia separatists shot down at least one attack helicopter, killing a pilot.

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.

Ukrainian government troops guard a checkpoint just outside Slovyansk, eastern Ukraine, Friday, May 2, 2014.

Pro-Russian gunmen listen to instructions from their commander, center, behind barricades in Slovyansk, eastern Ukraine, Friday, May 2, 2014.

A pro-Russian rebel aims his rifle at a checkpoint near a Ukrainian airbase in Kramatorsk, eastern Ukraine May 2, 2014.

Ukrainian soldiers sit on a armoured personnel carrier at a Ukrainian checkpoint near the eastern town of Slaviansk May 2, 2014.