REUTERS/Marko Djurica
Ukrainian soldiers sit on an airborne combat vehicle near Kramatorsk, in eastern Ukraine April 16, 2014. Ukrainian forces tightened their grip on the eastern town of Kramatorsk on Wednesday after securing control over an airfield from pro-Russian separatist militiamen, prompting Russian President Vladimir Putin to warn of the risk of civil war.
A soldier was wounded in the attack by about 70 people who Interior Minister Arsen Avakov said on Facebook were led by Russian soldiers. Casualty details for the attackers were not clear, he said.
Avakov also said pro-Russian protesters had left the town hall in Mariupol, an industrial city on the Black Seacoast, and the mayor was back in his office - meeting the agreements made with Russia at a Geneva meeting a week ago.
(Reporting by Natalia Zinets and Alastair Macdonald; Editing by Louise Ireland)