in the modern era. russia shouldn't be allowed to get away with it. >> one of the things you will know about from your days at the defense and the cia is that there are lots of types of sanctions. we tried some with russia including after the first invasion of crimea. now biden hinted yesterday they are not going to be able to do business in dollars. the banks won't be able to get dollars. we haven't seen any of those sanctions there but people we've spoken to said that actually could be cripple go to russia. >> no doubt, ali. first, russia is a declining power, its economy is fairly brittle and fragile. when you cut off the ability of russian financial institutions to work in dollars, that could have a very significant and crippling effect. i don't think putin has a huge margin of error here. he is pursuing here an attempt i guess to shore up his own popularity within russia but if he engages in this cross border attack and he, the result is a