“Not only will America come to your country and kill all your people, but what's worse is that they'll come back 20 years later and make a movie about how killing your people made their soldiers feel sad.”
And of course, look at Afghanistan today.
But the corruption just made a joke of everything, and of course it all ended badly. :(
That's why China intervened?
I am not sure what exactly you are suggesting here, but its hard to believe that a nuclear war against china (and likely the USSR) in 1951 as MacArthur seemed to believe was necessary to recover North Korea would have been a net positive.