bin laden's home. so we've had some big advantages by using as an organizing principle going after the leader that i think would also work to our benefit with bagdadi. >> north korea only was this a test but it could be a sign that they could have a warhead, a small one, in a shorter time frame, than had been recently expected. we remember with syria the line in the sand that the president drew. when you look at north korea, if you were president of the united states, what would be your line in the sand that, if this supposed madman in north korea gets a weapon that, if he crosses this line, it's no longer just about sanctions. >> oh, i absolutely believe that it has to be made very clear. we will not allow north korea to have a deliverable nuclear weapon, and we will approach this from a number of perspectives. i have had conversations in the past with the chinese about north korea. up until relatively recently, i think they were under the impression that they could control their neighbor. and they didn't want to crack down because they saw it as a useful card to play. he gets a little crazy, maybe the south koreans will, you know, move toward them a little bit,