took this short and sweet letter and had it taken to the oval office. probably 20 minutes after the president received the letter, he said john bolton didn't quit. i told him last night that he was fired and to give me his resignation letter today. this is probably going to remain a he said he said type of thing, shep. the president has his version of events, which is backed up by hogan gidley and the secretary of state and john bolton is backing up several and several other people close to him backing up as well. what you believe depends on who you believe in this particular case. >> shepard: i'd say historically there's a lot of exits, maybe a very high number of exits. but rarely have you seen somebody exiting turn around and say no you don't. i can't quit. you fired me, no, you didn't