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,
Japanese air attacks on the Mariana Islands Jima on February 19, 1945. The island was attacked at least once each day by the Seventh Air Force's B-24s between December 8, 1944, and February 15, 1945, and several of these aircraft were shot down. Cruiser Division 5 also conducted naval bombardments on December 24 and 27 as well as January 5 and 24. In the last of these attacks the heavy cruisers were joined by the battleship . US aircraft also mounted small-scale night attacks to disrupt Japanese repair efforts. In addition, the USAAF continued to attack the other Pacific islands within range of the Marianas until July