You do realize that North Korea first invaded South Korea?[0] And because the US was able to defend South Korea from a communist takeover, but failed to preven

You do realize that North Korea first invaded South Korea?[0] And because the US was able to defend South Korea from a communist takeover, but failed to prevent Vietnam, South Korea's GDP per capita is $35k while Vietnam is $3.7k, an almost order of magnitude difference. North Korea's fate was even worse... [0]https://en.wikipedia.org/wiki/Korean_War#Course_of_the_war https://en.wikipedia.org/wiki/Korean_War#Course_of_the_war