Members of Crimean self-defence units and Interior Ministry members block a topless activist from the Ukrainian feminist group Femen, who is taking part in an anti-war protest, near the Crimean parliament building in Simferopol March 6, 2014. European Union leaders were set to warn but not sanction Russia on Thursday over its military intervention in Ukraine after Moscow rebuffed Western diplomatic efforts to persuade it to pull forces in Crimea back to their bases. REUTERS/David Mdzinarishvili (UKRAINE - Tags: POLITICS MILITARY)