Fearing imminent defeat, Stalin asked China to intervene on October 1. US troops crossed the 38th parallel on October 7. They briefly reached the Yalu River on November 21 before they were turned back by the Chinese. By June 1951, the military line stabilized at approximately the 38th parallel, the pre-war dividing line. | Fearing imminent defeat, Stalin asked China to intervene on October 1. US troops crossed the 38th parallel on October 7. They briefly reached the Yalu River on November 21 before they were turned back by the Chinese. By June 1951, the military line stabilized at approximately the 38th parallel, the pre-war dividing line. |