when did un troops approach the yalu river
Yalu River The Korean side of the river was heavily industrialized during the period of Japanese rule (1910–1945), and by 1945 almost 20% of Imperial Japan's total industrial output originated in Korea. During the Korean War, the movement of United Nations troops approaching the river precipitated massive Chinese intervention from around Dandong. In the course of the conflict every bridge across the river except one was destroyed. The one remaining bridge was the Sino–Korean Friendship Bridge connecting Sinuiju, North Korea to Dandong, China. During the war the valley surrounding the western end of the river also became the focal point of a series of dogfights for air superiority over North Korea, earning the nickname "MiG Alley" in reference to the MiG-15 fighters flown by the combined North Korean, Chinese and Soviet forces.[citation needed]
Yalta Conference The Yalta Conference, also known as the Crimea Conference and code named the Argonaut Conference, held from 4 to 11 February, 1945, was the World War II meeting of the heads of government of the United States, the United Kingdom and the Soviet Union for the purpose of discussing Germany and Europe's postwar reorganization. The three states were represented by President Franklin D. Roosevelt, Prime Minister Winston Churchill and Premier Joseph Stalin, respectively. The conference convened near Yalta in Crimea, Soviet Union within the Livadia, Yusupov, and Vorontsov Palaces.