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 long time to try to determine what may or may not be the status of these missile programs in north korea. frankly, michael, i think the smart estimate is, that there's an inevitability about the north koreans getting to the point we fear and you mentioned, but i don't think they're there yet. i think they're several years away. this is a complex problem but they are solving it one piece at a time, even with their unsuccessful missile tests. so again, inevitability but they're not there yet.