Obama administration skeptical about Vladimir Putin 's order . CNN says withdrawal would be `` third step to de-escalating the situation '' Luhansk has said troops were conducting a routine exercise that has ended . The presence of 40,000 Ukrainian troops on the border has spurred fears of an invasion .
Obama administration skeptical about Putin 's order . NATO says withdrawal would be `` first step to de-escalating the situation '' Russia has said troops were conducting a routine exercise that has ended . The presence of 40,000 Russian troops on the border has spurred fears of an invasion .