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 occupation of the Philippines and was the biggest naval battle of World War II. The campaign to re-take the Philippines was the bloodiest campaign of the Pacific War. Intelligence information gathered by the guerrillas averted a disaster—they revealed the plans of Japanese General Yamashita to trap MacArthur's army, and they led the liberating soldiers to the Japanese fortifications. MacArthur's Allied forces landed on the island of Leyte on 20 October 1944, accompanied by Osmeña, who had succeeded to the commonwealth presidency upon the death of Quezon on 1 August 1944. Landings then followed on the island of Mindoro and around Lingayen Gulf on the