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,
Internment of Japanese Americans trade and immediately began to arrange a second exchange of non-officials for February 1944. This exchange would involve 1,500 non-volunteer Japanese who were to be exchanged for 1,500 Americans. The US was busy with Pacific Naval activity and future trading plans stalled. Further slowing the program were legal and political "turf" battles between the State Department, the Roosevelt administration, and the DOJ, whose officials were not convinced of the legality of the program. The completed October 1943 trade took place at the height of the Enemy Alien Deportation Program. Japanese Peruvians were still being "rounded up" for shipment to the