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,
Okinawa Island During this 82-day-long battle, about 95,000 Imperial Japanese Army troops and 12,510 Americans were killed. The Cornerstone of Peace at the Okinawa Prefecture Memorial Peace Park lists 149,193 persons of Okinawan origin – approximately one quarter of the civilian population – who either were killed or committed suicide during the Battle of Okinawa and the Pacific War. During the American military occupation of Japan (1945–52), which followed the Imperial Japanese surrender on September 2, 1945, in Tokyo Bay, the United States controlled Okinawa Island and the rest of the Ryukyu Islands. The Amami Islands were returned to Japanese control in