World War II
Allied Victory in the Pacific
After the completion of the campaigns in the Solomon Islands (late 1943) and New Guinea (1944), the Allied advance moved inexorably, in two lines that converged on Japan, through scattered island groups—the Philippines, the Mariana Islands, Okinawa, and Iwo Jima. Japan, with most of its navy sunk, staggered beneath these blows. At the Yalta Conference, the USSR secretly promised its aid against Japan, which still refused to surrender even after the Allied appeal made at the Potsdam Conference. On Aug. 6, 1945, the United States first used the atomic bomb and devastated Hiroshima; on Aug. 9, the second bomb was dropped on Nagasaki. The USSR had already invaded Manchuria. On Aug. 14, Japan announced its surrender, formally signed aboard the U.S. battleship Missouri in Tokyo Bay on Sept. 2.
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