now. and so they want to calculate the invasion. for folks at home who know nothing about ukraine, how dangerous would this be? >> i think that it would be very bloody. i think the russians would most likely -- again, i'm doing this as the nonmilitary expert, the russians would most likely make considerable initial gains if they moved in the east. a key weakness of the ukranians is their air force which probably cannot provide the proper cover that the ukranian army would need. however, after a number of months if the russians did invade in a massive way, holding that land would be difficult despite kremlin propaganda, the russians speaking ukranianese is not willing to join the russian