If China won't protect its sphere of influence from the crazy kid next door, then....

Donald Trump's challenge to a hallowed principle of Chinese nationhood has opened a counter to China's unconstrained hegemony of the Pacific Rim. If China wants its sphere of influence then it must show those under it that its an useful order.  If it allows the reckless kid next door to play with nuclear missiles then its only natural for Taiwan to reconsider mainland China's usefulness as the sheriff in town and ask the United States for weapons to help them protect themselves from that crazed neighbor, just like South Korea did and Vietnam wants to.