Third and fourth terms of the presidency of Franklin D. Roosevelt well-defended island of Iwo Jima, taking control of that island the following month. On April 1, the U.S. landed on Okinawa Island, the largest of the Ryukyu Islands. The Japanese allowed the Americans to land on the island before launching a fierce attack that included "kamikaze" suicide attacks by Japanese aircraft. Japanese forces on Okinawa held out until June 1945; U.S. forces suffered over 60,000 casualties during the operation. In late 1943, Roosevelt, Churchill, and Stalin agreed to meet to discuss strategy and post-war plans at the Tehran Conference, which marked Roosevelt's first face-to-face meeting with Stalin. At the conference,
United States Army Air Forces in the Central Pacific Area on Tinian and Guam. Eighth Air Force was transferred from England to be a second strategic air force in the Pacific War, with a mission to carry out B-29 attacks on the Japanese Home Islands during the planned Invasion of Japan beginning in November 1945. These advance units were reassigned to other stations in December 1945. Seventh Air Force operations focused on supporting Army and Naval forces in the tactical campaigns against Japanese forces in the Central Pacific, while Twentieth Air Force performed strategic bombing missions directly against the Japanese home islands. BAKER ISLAND CAROLINE ISLANDS GILBERT ISLANDS HAWAIIAN ISLANDS