north korea than his own advisers, how do you translate that into policy? >> you know, it's interesting, he's been chest beating and saber rattling going back weeks now, starting with his comments about fire and fury. i have to say, i'm beginning to wonder whether, in fact, he's trying to provoke the north koreans into doing something. he feels like he wants to get going with them and if he can wind them up enough, maybe they'll take a shoot. because there is no other good explanation for why he would raise the rhetorical stakes this way. i think the rest of the administration is doing what they can to explain to him the immense downsides of the united states starting a war with north korea, in terms of south korea and the hundreds of thousands of u.s. citizens and troops that are on the korean peninsula. >> you know, senator bob corker, chairman of the foreign relations committee, he told "the new york times" that president trump's tweets have derailed backchannel talks with north korea, diplomatic back channel talks with north korea. do you think that's true? >> well, i have to imagine that