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,
Attack on Yokosuka airfields around Tokyo and claimed to have destroyed 340 Japanese aircraft on the ground and two in the air. No Japanese aircraft responded to this attack as they were being held in reserve to mount large-scale suicide attacks on the Allied fleet during the expected invasion of the country later in 1945. Following this raid, the Third Fleet conducted raids on Hokkaido and northern Honshu on 14 and 15 July which sank large numbers of ships and destroyed 25 aircraft on the ground. The American warships then sailed south and on 16 July were joined by the British Pacific Fleet's