trump formula. the north koreans basically understood that they had gone too far and they wanted the summit. and, of course, they need the summit, heather we have where the president did stare and the north koreans did blink. heather: what do you make of this? because we hear the other side of the camp who says almost like they are hoping this won't work for president trump the moves is he making and the summit will not happen in singapore. at the same time, you have kim jong un seemingly following along exactly what president trump, perhaps, has planned. >> yes. i mean there is perform really on all sides of the political spectrum that the north koreans won't disarm. yes they don't want to disarm but they said they would. that creates markers for president trump to enforce. president trump can use all the elements of american power, even short of the use