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,
Battle of Okinawa sunk. The Imperial Japanese Navy lost some 3,700 sailors, including Admiral Itō, at the cost of 10 US aircraft and 12 airmen. The British Pacific Fleet, taking part as Task Force 57, was assigned the task of neutralizing the Japanese airfields in the Sakishima Islands, which it did successfully from March 26 to April 10. On April 10, its attention was shifted to airfields on northern Formosa. The force withdrew to San Pedro Bay on April 23. On May 1, the British Pacific Fleet returned to action, subduing the airfields as before, this time with naval bombardment as well as