general john nicholson, commander of u.s. forces in afghanistan, said, the dropping of that bomb was solely related to afghanistan, but i think it would have been impossible for kim jong-un to ignore. on friday, china warned the united states and north korea against engaging in tit for tat and urged both parties to refrain from inflammatory or threatening statements or deeds to prevent irreversible damage to the situation on the korean peninsula. the aircraft carrier "carl vinson" is in the region and vice president mike pence will arrive in seoul on sunday. it's a lot to discuss with the perfect guest. general michael hayden is the former head of both the nsa and cia, his memoir "playing to the edge, american intelligence in the age of terror" now available in paperback. general hayden, what's in those cans and how do we know? >> well, michael, we don't know. and i think we're going to have an awful lot of american intelligence analysts looking over parade footage for a very