Lerxtcat you assume an all or nothing scenario. "US and Russia will launch nukes to counter all out China agression"

What if they are actually smart enough to take land piece by piece. For example, they decide that they have had enough of that Taiwan and democracy so they invade Taiwan. Do you honestly think the US or Russia, for that matter, is willing to launch nukes over Taiwan. We won't and every president since Jimmy Carter has pretty much said as much. Factor into that equation that the Chinese have the capability of hitting LA with a nuke attack of their own and there is no way we will intervene. So WHERE exactly will we draw the line?

If not Taiwan then what about the Phillipines or any other territory in the south pacific? How about Hawaii?

No this will NOT happen tommorrow and the real threat is probably twenty to thirty years down the road but it is not being in the throngs of the "yellow peril" to recognize a future enemy when one sees him.