My biggest concern is that if you look closely at Kim Jong Un, you might see the puppet strings from China and Russia. It looks more and more like Un is their patsy. Also, Trump is extremely easy to manipulate. Especially if his noted limited attention span is accurate.
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Both countries stand to gain from a war more than anyone else. 
Both countries would like it if the US loses some/most/all of its global influence.
Both countries are infamous for duplicitous actions and positions.
Both countries are "allies" of North Korea.
Neither country really needs North Korea.
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China's actions could easily be explained as political stalling tactics designed to buy North Korea more time. This allows North Korea to become an even bigger threat to the US.
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I really hope that China/Russia haven't been feeding North Korea information on how to make nuclear weapons/ICBMs. I hope they are familiar with the "Scorpion and the Frog" fable.