north korea with this back and forth, comparing the size of nuclear buttons. kim jong un is not to be homicidal, not suicidal. i think with all of that back and forth and strategy of 2017, the moment came or he said, donald trump might just be crazy enough to use the nuclear option on me. i think that ends up ramping up the effectiveness of the diplomacy, multilateral diplomacy, that is where we are today. we are skeptical, hearing that from a lot of people, we are cautious, need to keep up the maximum pressure strategy. we are also seeing that there might be a real opportunity to actually denuclearize the korean peninsula. >> shannon: what do you say to those critics who say, the whole time he was making these threats, talking tough on twitter, they were testing weapons, testing the ballistic missiles, although things were happening. they started behaving and they wanted to reach out to the region and the u.s. some are wondering whether they are pivoting now because now