An unidentified armed arm, right, and Ukrainian police officer, 3rd left, stand by the door as people enter the local government building in downtown Simferopol, Ukraine, on Sunday, March 2, 2014. A convoy of hundreds of Russian troops headed toward Simferopol the regional capital of Ukraine's Crimea region on Sunday, a day after Russia's forces took over the strategic Black Sea peninsula without firing a shot. (AP Photo/Ivan Sekretarev)