I believe that despite his strong trump character, he has been a leader that before every step he has taken, I think that first he has gone to dialogue, before Syria, Iraq, the warning to those countries that desisted, he did not do it then I act,
In the case of Korea it is a country that for them death and pride is above all else does not mind dying to duck its head, and really if trump gets to dialogue, it made a very important achievement that avoid a worse disaster