Ukrainian tanks are transported from their base in Perevalnoe, outside Simferopol, Crimea, Wednesday, March 26, 2014. Ukraine has started withdrawing its troops and weapons from Crimea, now controlled by Russia. (AP Photo/Pavel Golovkin)

Ukrainian tanks are transported from their base in Perevalnoe, outside Simferopol, Crimea, Wednesday, March 26, 2014. Ukraine has started withdrawing its troops and weapons from Crimea, now controlled by Russia. (AP Photo/Pavel Golovkin)