Exactly - time to get rid of Donald it is then...The Norks might well be fooked. China's largest trading partner is the USA. Losing $400 thousand million a year might not sit well with the Chinese if things go incredibly badly.
China, the U.S., Japan and, of course, South Korea might knock the Norks' dick in the dirt in short order. Would Russia have the inclination to get involved? It is never good to have a madman in the neighbourhood.