when you can't be sure where they come from. are you really going to launch some kind of a war, a military operation in response? biden raised a very intriguing possibility of an american cyber counter attack. we have never done this before to the best of my knowledge. he even outlined what it would be, shutting down russia's oil pipelines, using american cyberattack capacity, which is, of course, huge. >> yeah, the u.s. has enormous capability if they were going to get into that kind of conflict. farid, thank you very much. fa fareed zakaria help ing us. we will take a deeper dive into navalny and putin's refusal to utter his name. stay with us. you are in "the situation room."