I know you don't hold China in high esteem, and that's understandable. But you're not thinking rationally. The fact is this, China does not want a war on the Korean peninsula.

They have absolutely nothing to gain from that, and everything to lose. Economically it's not in their interest, their trade with South Korea now approaches approximately $200bn per year. Strategically a collapse of the North Korean regime would unleash a flood of refugees across the Chinese border, a phenomenon China experienced in the mid-1990s when tens of thousands of North Koreans, if not more, fled widespread famine in their homeland. But it would be in a much more massive scale. The ensuing chaos could bring American intervention in China's backyard and prospectively, a reunited, democratic, pro-western Korea - how is that prospect any benefit to China?