"More than half a century after hostilities ended in Korea, a document from the war's chaotic early days has come to light - a letter from the US ambassador to Seoul, informing the State Department that American soldiers would shoot refugees approaching their lines. The letter, dated the day of the army's mass killing of South Korean refugees at No Gun Ri in 1950, is the strongest indication yet that such a policy existed for all US forces in Korea, and the first evidence that that policy was known to upper ranks of the US government."