there? >> reporter: the latest, kate, it's been quite a strong reaction from the ukrainians, that decision by the u.s. state department to allow non-essential diplomats to leave the country and order the families of diplomats out of the country. there's no need noirfor that kif action, they're saying, the security situation on the border has not changed significantly in the last several days or longer than that to warrant that and coin it an overreaction, excessive amount of caution, i think is the phrase that the foreign ministry used and it kind of exposes, once again, the difference of opinion, the frustrations, the disagreements that exist behind the scenes between the united states and ukraine, even though this is close military and diplomatic partnership. there is a certain amount of blue water between how they see this conflict developing. the ukrainian leadership is trying to play down the possibility of being impending russian invasion saying the security invasion, the threat