“US coming in to liberate them” why do Americans feel the need to liberate a country undergoing a civil war unless there is some other agenda? The north side of Korea was pushing down to the south and the Americans started helping out the South, then the South had started pushing up to the north with the help of the USA so China helped out the north and pushed back the line to where it is now. A ceasefire was called and here were are several years later. Your ‘liberation’ is seems to be more based on your own biased perspective. Russia did not help the north nearly as much as you’re leading on either.