Unintended Consequences

I think it was General Colin Powell who reminded us about unintended consequences when George Bush contemplated the second Iraq war.  Those words haunt to this day.  And Trump seems ready to pursue unintended consequences with China.  Initilly, he tweets that there was nothing in the Taiwan phone call - he said they called him, implying what's the big deal.  A couple days later, he tweets about the problems that he finds with China and e learn that the Taiwan call was  in the works for a while.
China reacted by blaming Taiwan for the call.  This is just as dangerous as if China actually confronted Trump, who is, thankfully, not yet, the American government representative.  China could easily gobble up Taiwan - one little island against a nation that is a continent of how many people?
What happens then?  Do we take on China militarily over Taiwan?  Then there is always the issue of American debt held by China and North Korea.  And does Trump want American shoppers paying a 35% premium due to the tariffs he wants to impose?
I don't think Trump has ever played chess.