EDITORIAL USE ONLY - NO COMMERCIAL OR BOOK SALES. A woman crosses a bridge as a pro-Russian rebel looks through the scope of a sniper's rifle to check the area around a rebel held position on the outskirts of the eastern Ukrainian town of Slaviansk May 15, 2014. REUTERS/Yannis Behrakis (UKRAINE - Tags: POLITICS CIVIL UNREST CONFLICT TPX IMAGES OF THE DAY)