South Korea–United States relations
Following Japanese surrender at the end of the Second World War, the Allied Powers divided the Korean peninsula along the 38th Parallel with two occupation zones with the United States in the south, and the Soviet Union in the north that would later become North Korea. On August 15, 1948, the southern half of Korea declared independence as the Republic of Korea with Syngman Rhee as president. The United States recognized the Republic of Korea as an independent state on January 1, 1949 and diplomatic relations between two countries were established on March 25 in the following year.
Cross-border skirmishes and raids at the 38th Parallel escalated into open warfare when the North Korean forces invaded South Korea on June 25, 1950. The Korean War broke out when North Korea invaded South Korea. In response, 16 member countries of the United Nations, including the United States, came to the defense of South Korea. It was the first significant armed conflict of the Cold War with extensive deployment of American and other troops.
Embassy of South Korea, Washington, D.C.
After the independence of Korea from Japanese rule in 1945, and the founding of South Korea in 1948, South Korea immediately restored normal diplomatic relationship with the United States and has since been sending ambassadors to the United States. Although Chang Myon is officially recorded as the first ambassador serving from February 1949, Chough Pyung-ok was recognized in August 1948 as the Special Representative of the President of South Korea with a personal rank of Ambassador. Chang replaced Chough in January 1949 in the same capacity, and was appointed as the first ambassador the following month.