You make excellent points. Your final sentence is realpolitik-speak at its finest. You are absolutely correct: the only thing that matters in warfare is who wins.
But you still evaded answering the moral dilemma as posed. If it’s okay for the US to invade and occupy a foreign land, and if it’s morally acceptable for the US to bomb citizens of the invaded country who have tried to expel us, does the same moral
principle hold for a foreign invasion and occupation of America? As for me, I don’t think it’s moral for anyone to do it. But it was posited by another poster that he is good with America doing it. For those that agree with him (you have not opined on it that I have discerned), are they consistent in thinking it would be morally okay if China (as an example) was able to do it to us?