A Ukrainian special forces officer looks through binoculars as he stands guard at a check-point on the road between Donetsk and Slavyansk, not far from the eastern Ukrainian city of Donetsk, on April 25, 2014. Ukraine's army today launched an operation to ensnare pro-Russian militants in the flashpoint eastern city of Slavyansk in a bid to prevent reinforcements and keep civilian casualties down, authorities said.  AFP PHOTO / ALEXANDER KHUDOTEPLY        (Photo credit should read Alexander KHUDOTEPLY/AFP/Getty Images)