All I can, say from what I hear , is that he is a crackpot who is playing a very dangerous game.
Forget the USA for a minute, and recognise that both China and Russia do not want this idiot taking any foolish action on their doorstep and will be the first to retaliate if, and it is a big if from what I understand, N.Korea do the unthinkable and launch a nuclear armed intercontinental missle(s). Both China and Russia are watching developments within this wayward regime, and will take the necessary action required, as and when. You give any child a chance or six, but then finally slap them down once they become a danger to themselves and everyone else, especially to the ambitions and safety of China and Russia.
No doubt others will see it differently, but I see both China and Russia are playing a power game and they do not want a rouge state upsetting the balance in their part of the World. When they were both pure communist countries it would have been totally different and they would have protected thier own from "American aggression". No more is Russia a communist state, and Chine is growing more capitalist by the day.
Overall of course you have the USA needing to protect their interests, both politically and commercially in the region/world, so I am sure will be working with both China and Russia to knock N.Korea down.