A man holds a poster reading, «Crimea — Russia» during a pro-Russian rally in Simferopol, Crimea March 1, 2014. Russian President Vladimir Putin wrested control of the Ukrainian Black Sea region of Crimea from Kiev on Saturday citing a threat to Russian citizens and servicemen of the Russian Black Sea fleet based there. REUTERS/David Mdzinarishvili (UKRAINE — Tags: POLITICS CIVIL UNREST)