If UN forces, by the end of the war, are able to hold all of Korea and are at the Yalu, the peace talks are essential to end the war. China will continue to attack if they feel the US could launch an attack to restablisht he KMT in China.
With a united, "democratic" Korea achieved, the US might agree to a situation where only a token sea/air based in the south (say at Pusan), but there are no permanent troops, certainly nothing near the border. Or, the US might even accept Korea to be like an "Asian Austria" - friendly, but neutral and outside any military alliance, but with an implied protectorate in case of attack.
Stalin would likely accept such a scenario, and would probably convince Mao to accede.
A more interesting question is what happens if the UN holds the line north of the 38th parallel (perhaps even north of Pyongyang), but is unable to push Chinese troops over the Yalu. Most likely, the war ends in another stalement with a continued North Korea state, but one much smaller than we have now. That North Korean state will not have anywhere near the resources the real one has. It will require a lot more subsidies during the Cold War, and may not have enough resources to pursue a nuclear program afterwards.
With a united, "democratic" Korea achieved, the US might agree to a situation where only a token sea/air based in the south (say at Pusan), but there are no permanent troops, certainly nothing near the border. Or, the US might even accept Korea to be like an "Asian Austria" - friendly, but neutral and outside any military alliance, but with an implied protectorate in case of attack.
Stalin would likely accept such a scenario, and would probably convince Mao to accede.
A more interesting question is what happens if the UN holds the line north of the 38th parallel (perhaps even north of Pyongyang), but is unable to push Chinese troops over the Yalu. Most likely, the war ends in another stalement with a continued North Korea state, but one much smaller than we have now. That North Korean state will not have anywhere near the resources the real one has. It will require a lot more subsidies during the Cold War, and may not have enough resources to pursue a nuclear program afterwards.