. >> laura: secretary ryan zinke, you were the officer and charged with the first joint u.s. special forces up after the fall of the soviet union. so what is your assessment of what we are currently seeing from russia in ukraine, it things that will intensify? putin does not want a p.r. disaster and this is becoming a p.r. disaster for him. he has that era about him. how with the special forces from the russian military be used? >> well, russians are definitely tough but urban warfare will be tougher. going door to door, the russians if they get bogged down in kyiv, the tanks will not be a lot of help in close quarters. tanks are vulnerable by the missile systems from looking from a point of being in a building looking down. tanks have become very vulnerable. an urban warfare, i think it will stop the russian movement. and putin will have to make a very difficult decision. to go on and crush resistance at great cost or negotiate. >> laura: well, senator sullivan, right now the concern on the part of the americans, i think, and you can't blame them after iraq and afghanistan a