All our trouble with China comes from their going Communist in 1949. Before then it was a friendly country and an ally.
Chiang Kai-shek wasn't perfect (he was very pro-moslem and anti-Zionist), but all of the terrible things that have happened to that country since 1949 could have been avoided if we had just treated him like the wartime ally he was instead of belatedly deciding that he was a "fascist."
Thanks a lot Truman, Acheson, Marshall, Lattimore, and the IPR gang!
If we had to do it all over again, I wonder who would have been the bigger threat long-term: Imperial Japan or Communist China? I would say China, because of their much higher population. I never thought Imperial Japan could really ever manage to control Asia.