The Iran deal was a poorly negotiated and given the history needs to be re-visited. The Cuban deal probably should have been left alone with efforts to improve. NK is very different as they already have nukes due to mistakes made by every previous administration going back decades. The best I can say about all previous administrations is that they were largely dealing with people who couldn't have cared less about becoming "westernized", or acting in even a remotely civilized way. Today I think there is a deal to be made. Kim might be, just might be convinced he can live like a king without having to imprison and kill tens of thousands annually. It's worth a shot, and if it doesn't work we're no further from or closer to war than we were a year ago. We still may need to make the entire country disappear, but we should at least lay out an alternative before taking that step.