South Korea proposes talks to officially end war with North

How realistic is this? While North Korea has apparently recognised South Korea, the hostilities will not cease or end from the North Koreans unless South Korea stops hosting American military on its soil. But does South Korea feel confident enough to defend itself without the Americans? As a superpower, is the US willing to forego a military presence in that region? Under what conditions will China / Russia allow both side to repair their relationships? Both China and Russia really upped their ante against the South Koreans, by helping the North Koreans upgrade their military, when they made public their intention to join the AUKUS alliance ( https://www.scmp.com/news/asia/east-asia/article/3261039/fir... ).