NATO commander concerned about buildup of Russian forces on Ukraine 's border . `` The acting President of Ukraine has given an order to the Ukraine Defense Ministry for the withdrawal of all Ukrainian forces from Crimea , '' a spokeswoman for Turchynov told CNN . Russian threats cited as reason for withdrawal , spokeswoman says . Russia seizes naval base in Crimea , captures troops . Comment: * .
NATO commander concerned about buildup of Russian forces on Ukraine 's border . Russian threats cited as reason for withdrawal , spokeswoman says . Russia seizes naval base in Crimea , captures troops . Comment: * .