12 points
Helping kick out US troops from a sovereign state that has asked for their help isn’t an invasion though
-3 points
probably not a door you want to open unless you want the top map to suddenly get a lot less red
also, even if you accept that line of thinking, it still became an invasion when they crossed the 38th parallel
6 points
There were not two states in Korea at the time, a “North Korea” and a “South Korea”. There is one nation - Korea - and it’s Southern half was occupied by a foreign force. Literally - South Korea was not liberated from Japan at the end of WWII, Japan transferred it’s occupation to the United States.
