Japanese air attacks on the Mariana Islands 1945. While the attacks on Iwo Jima damaged the island's airfields, the Japanese managed to keep at least one of them operational at all times, and none were closed for more than a single day. The need to repair damage to the airfields forced the Japanese garrison on Iwo Jima to divert labor from building defensive positions, however. The combination of heavy losses over Saipan and damage to the airfields on Iwo Jima caused the Japanese to break off their attacks against the Marianas on 2 January. Few Japanese aircraft visited Iwo Jima starting in January, and due to their
Third and fourth terms of the presidency of Franklin D. Roosevelt attention to the conquest of the Dutch East Indies, which had a large supply of oil. In order to consolidate control of the Dutch East Indies, Japanese military planners believed that they needed to capture the Philippines, take control of the British base at Singapore, and defeat the United States Pacific Fleet, which was stationed at the Hawaiian naval base at Pearl Harbor. No Japanese leader saw the total defeat of the United States as a feasible outcome, but many hoped that a decisive naval victory would convince the Americans to leave control of the Pacific to Japan. Prime Minister