CORKER: I think there are people around him that work in an effort to contain him. That would be [Defense] Secretary [Jim] Mattis and [Secretary of State Rex] Tillerson and General [John] Kelly, there — his chief of staff. I do think . . .

GUTHRIE: Well that almost accepts the premise of the question — if he needs to be contained?

CORKER: I do think when you have the kind of issue we have in North Korea, where we have a very unstable leader there, when you send out tweets into the region to raise tensions, when you kneecap — which is what he's done, publicly — when you kneecap your secretary of state, whose diplomacy you have to depend upon to really bring China to the table to do the things that need to be done — back-channeling in some cases to North Korea — when you kneecap that effort, you really move our country into a binary choice which could lead to a world war. So yes, I want him to support diplomatic efforts — not embarrass and really malign efforts that are underway to try to get some kind of diplomatic solution here. And I think most people would agree with that.