It will definitely go down as one of the biggest failures of mankind. Especially since it was so easily preventable if MacArthur was permitted to just take the whole peninsula.
China was already sending troops and material to the front lines when MacArthur was ordered to stand down. Pushing further would have meant a hot war with China.
There is no way we could match them in numbers on the ground. Such a conflict would have inevitably led to us nuking them as a result. Which is probably the reason decision makers chose not to.
And maybe that's really the humanitarian failure. That USA didn't nuke China in 1950 or 1951. Would have solved a lot of problems for generations of people.
USA dropping nukes would have prevented the convention against using nukes in wars from being started. I think there's a pretty good chance we wouldn't have any civilization left by now if we went down that fork in history.
How is nuking Japan different from nuking Korea? Everybody agrees that forcing Japan to surrender with nukes was much better for everyone involved than a ground invasion.
When Japan was bombed, nobody else in the world had nuclear weapons, the US only had 2, and there were only a handful of people outside of the US seriously researching nuclear weapons and were still years away from a test. By 1950 the USSR had working nuclear bombs, had proven so with a nuclear test, and a dozen other countries had started their own nuclear weapons programs.
Maybe the real humanitarian failure is that the US didn't nuke everybody and start over from the stone age. Can't any societal problems if no societies exist, right?
Does any serious historian believe that fully defeating the Soviet Union after WWII would have been possible? Even with the advantage of nuclear weapons, I doubt the US would have made it very far.
Or how about us not blowing them to bits in the first place? South Korea was on the very edge of capitulation before the US came in full force and even most South Korean citizens were in support of Korean unification at that time. The current state of North Korea would have never come to reality if they hadn't been blown to bits by the US because of big ol' scary "communism".
What makes 1950s Korea evil? You are equating North Korea today with Korea of 75 years ago, they aren't even remotely similar. You don't think your nation getting bombed to literal fields of rubble wouldn't change views and political stances afterwards?
Unification was supported by both sides among the people, most South Koreans supported communism and 70% of them supported unification with the North. South Koreans didn't even support their own government, they were dealing with internal insurrection from their own people. The North was an industrialized nation and the South was a poor farming country and their unification would of been hugely beneficial to both. The war would have been over in another 2 weeks without intervention and a minimal amount of casualties, and it had only been 3 months from the start of the invasion. The only people not in support of it at the time was the political leaders of SK at the time because it meant they personally as individuals would lose power and wealth, and the US who was on a crusade to crush and kill anybody who dared support communism. Korea never should have been split in the first place, but the US and USSR had to be little bitches and force their will upon these people.
Killing 5 million people, most of which were innocent civilians, in the name of "fighting communism" is evil, not the idea of a unified nation of people supported by those same people.
Soviet occupation. Korea was supposed to be unified and elect a government back in 1950, Soviets made sure it didn't happen because they had no chance of winning.