Forget morals for at least 48 hours into the conflict, at that point it would all be reactionary, you know the deal, politicians waking up at the middle for the night with knocks on their bedrooms doors, being told there is a situation.
My point the world would still go round, like a record the next track will play, war has a different face now, same taste however. China has everything in their favor militarily, if they launch a assault, something has failed else where. Sitting around and talking about how you feel about at that point is like pissing in a hurricane.
Ships leave port, planes take off, crap appears on radars screens, ammo is handed out, and mixed damage assessments and reports fill radio channels. Listen USA is if you wish, but in the opening golden hours, stuff is blowing up, tracers go down range , and whatever your ears catch, is just a "wait till we get there" scenario for these first golden hours, thousands are simultaneously moving, and for the defenders on that island, I am pretty sure, for them and the U.S. standard procedure will be bout the only thing that may persists, and all assessments and text books get left on the shelf until the nature of the hostilities shows it's face, and the situation evolves into recognition.
The F 22, would be just a small part. On paper, numbers can conveniently add up, but whats happening to the estimators on the ground as they keep their ears glued to those headsets listing to the feed back from any engaged forces, most likely will not match up.
At the mention of nukes, add them, and the whole situation, in it's entirety will be changed.