A Cossak casts his ballot during the referendum on the status of Ukraine’s Crimea region at a polling station in Simferopol

A Cossak casts his ballot during the referendum on the status of Ukraine’s Crimea region at a polling station in Simferopol March 16, 2014. Voting got underway in Crimea on Sunday in a referendum that will decide whether the Black Sea peninsula leaves Ukraine and becomes part of Russia. REUTERS/Sergei Karpukhin (UKRAINE — Tags: POLITICS CIVIL UNREST ELECTIONS)