United states was very fast to come out and say that any rolling of the border by russian tanks would constitute an invasion, any land grab big or small would constitute an invasion and would carry those consequences that the u.s. has threatened. the whole world is on edge at this moment and waiting to see what the u.s. and its allies are willing to do if and when russia does choose to attack ukraine. >> lieutenant general, if the u.s. state department does, in fact, move out nonessential personnel and their family members, is this kind of catch-22? does it send a certain message to russia tha...