Sorry Stu, I don't agree with that assessment I think the East have views on adopting the place occupied by the US in the last couple of centuries.....It is unlikely that China will want to disarm NK, unless it becomes a hindrance or an embarrassment.

Disarmament of NK is all but impossible without huge loss of life.
I don't think it is President Trump's intention to provoke war but to set up a dialogue....The Goodcop/Bad cop scenario always assists in achieving that goal.
The great powers need to understand that world domination by one nation or one side is no longer an option and China, US and Russia need to move closer in prevention of terrorism, controlling rogue states and other matters of INTERNATIONAL importance