Trump is now trying to goad them into attacking first, which he would love.
If he attacks first, it would be mass murder on his part. The sickest thing about it, is that he will say "I didn't want it, but I had no choice. I was forced," when that's baloney. He's wanted war from the moment Obama whispered into his ear that it was a big problem. Back in February -- before any of the missile launches or provocations --
North Korea tried to send a diplomatic delegation to New York to feel out the new administration, and
they weren't even granted visas. Trump has never made any effort to seek out a diplomatic solution, instead from day one he concluded that since the AF collapsed, it was "25 years of diplomatic failure" despite all the evidence showing the opposite. The North Koreans have been very consistent about what they want - recognition of the reality that they are a nuclear power - which is not unreasonable given the threats being leveled daily now, and an end to the "hostile policy" towards them, which entails a peace treaty ending the Korean War. They have repeatedly implied that if the U.S. withdraws their hostile policy, their raison d'etre for having nuclear weapons will then go away. But Trump is more like an 8-year old boy with an inordinate hatred for East Asians (he came of age when it was the Japan-taking-over-everything in the '70s and '80s) and a joy for big toys that make things go bang bang that he wants to play with. But instead of toys, he has the real most destructive arsenal in the world. And all the so-called "responsible" adults in the world are just letting him sit there and play with it.