North Korea in the Korean War Yalu River, the border between North Korea and Communist China, the Chinese started to worry about protecting themselves from what they called "armed aggression against Chinese territory." Chinese leader Mao Zedong (1893-1976) sent troops to North Korea and warned the United States to keep away from the Yalu boundary unless it wanted full-scale war. Finally, in July 1953, the Korean War came to an end. Truman and his new military commanders started peace talks at Panmunjom. Still, the fighting continued along the 38th parallel as negotiations were stalled. Both sides were willing to accept a ceasefire that maintained the 38th
Soviet Union in the Korean War the precarious relations between both sides, while also offering possible advantages. As American and UN soldiers were already deployed in the war on the South Korean side, it was virtually assured that Soviet forces could not engage in open and direct hostilities against the South without provoking conflicts with other UN countries. Instead, the Soviet Union was compelled to conceal its participation in the conflict (at least to the extent where Soviet involvement could still be plausibly denied by the Soviet government) so as to minimize the risk of escalating the "Cold War" into a "Hot War" with NATO and