I guess the US should have just let Imperial Japan take China since apparently now all you need to do is want to grab territory real bad and that is enough justification.
At the very end you will just end up justifying it telling yourself "if I didn't do it, maybe they do it to me" everything is sunshine and rainbows until anyone have enough power to fuck up someone else WO consequences. It's just human nature maybe not just human but the price of being alive.
Yeah, without taking responsibility, accepting consequences, owning up to one's actions and failures, facing the actual shame , etc ; there's no way anyone would change their behaviour and erroneous ways.
Maybe China should aid Ukraine. And Palestine and Global South countries being invaded. They could free Tibet, and not attack Taiwan, Philippines, Vietnam etc while they're at it.