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 Americans the Japanese American Community Diabetes Study that started in 1994 and went through 2003, involved the pro-bands taking part to test whether the increased risk of diabetes among Japanese Americans is due to the effects of Japanese Americans having a more westernized lifestyle due to the many differences between the United States of America and Japan. One of the main goals of the study was to create an archive of DNA samples which could be used to identify which diseases are more susceptible in Japanese Americans. Concerns with these studies of the risks of inherited diseases in Japanese Americans is