we would hope, quickly getting rid of their weapons and nuclear infrastructure. leland: the president is calling this the start of a process, he says, the sit-down in singapore for june 12th. does it make sense? should there be a pro process or kim jong-un would say come in, a and-- >> if this is going to work, it's going to work as a result of a long-term process of building confidence and meeting each other's national security requirements. leland: interesting that we hear someone from the left, as you are, and someone who is as hawkish as secretary mattis, both using that term, confidence building. >> well, i think it's a -- both secretary mattis and i are probably probably hawkish on the question whether or not north korea is a threat to international peace and security. i think that both secretary mattis and i are both realistic, how this is likely to play out given what we've seen in other