Trump always adds fuel to a fire. The US should stay away but keep it's  defense system on 'extra' alert when it comes to N Korea. N Korea knows how to play the game and so many fall for it. It's like a child that wants attention. Let China deal with them. They have a better understanding than the Western world.
N Korea is the little tail wagging the big dog. Kim gets off on that. For years many countries have tried to placate N Korea with an enormous amount of help in the form of food aid etc. That in turn allowed N Korea to use use other revenues to build up it's  nuclear program. 
Few will dispute that the US interferes too much in too many parts of the world. Iraq and the US should never have happened, yet G W Bush walks away a free man. Saddam was no prince but he at least kept the region stable.