. Is it any wonder that the USA kept its policy of staying away from Europe. It was part of the whole "unofficial" arrangement between the USA and Japan starting in early 1944. Both trusted each other more than they trusted any of the European powers.
Especially since China end up trying to invade The Philippines with their newly bought second hand British and German ships.
The Japanese themselves are also appalingly cruel conquerors, but at least they have Honor to not launch sneak attacks to friendly nation like what Chinese does.
Sure, half of American public will scream and reject outright alliance against Japan before 1955 due to presence of Chinese lobby, but to half the others, giving Japanese support to end the Madness at Asia would be the best situation.
At least reasons and economic carrots win the day as East Asia become stabilized in 1953. Nixon's plan to have Emperor of Japan taking the Mandate of Heaven in China under personal union is definitely a stroke of genius. Forcing Japan to actually treat the conquered Chinese as their citizens instead of colonial subjects.
Sure, the remnant ROC operating in South China still thought the Yamato Dynasty as foreign usurper, but after 50++ years of stability, the Yamato Dynasty has been regarded as Chinese Emperor by everyone north of the Yangtze river