Secretary of State Dean G. Acheson gave a speech to the Delta Council in 1947. The speech was called "The Economics of Peace" and was created to promote world peace. In it he outlined the American defensive line to run through Japan, Ryukyu's, and the Philippines.
This speech about peace was considered to be controversial and ironic because many critics argue that it gave North Korea the idea to launch a military operation with the almost successful goal of spreading communism over the entire Korean peninsula. After the Korean War, many hold Acheson and his comments responsible for igniting the war between North and South Korea.