I don't know...
China is actually very vulnerable - still - economically. They are at the brink of a VERY large construction bubble; and things could melt into chaos so fast your head would spin. I can see why the PRC is so paranoid, because they just don't understand free enterprise enough to prepare for disaster. I think both our nations have benefited from the relationship - however I don't believe in letting them run over us like a truck either - but the smart way to deal with oriental politics is to apply pressure under the table. If that doesn't work then all bets are off - but I suspect we have many more friends in China than are in the government over there. Governments come and go, our good relations survived the Korean war and their cultural revolution, I just hope it will survive the next disaster, which I suspect will be very bad for at least one third of all the human beings on the Earth.