Atomic bombings of Hiroshima and Nagasaki - Wikipedia, the free encyclopedia
The atomic bombings of Hiroshima and Nagasaki were nuclear attacks during World War II against the Empire of Japan by the United States of America under US President Harry S. Truman. On August 6, 1945, the nuclear weapon "Little Boy" was dropped on the city of Hiroshima, followed on August 9, 1945 by the detonation of the "Fat Man" nuclear bomb over Nagasaki. They are the only instances of the use of nuclear weapons in warfare.
The United States Department of Energy estimates that, at Hiroshima, the death toll from the immediate blast was roughly 70,000, with additional deaths occuring in the time soon after the explosion and in the decades that followed. The figures for Nagasaki are slightly less. Other estimates vary widely, and are as low as 74,000 for Nagasaki. In both cities, the overwhelming majority of the deaths were civilians.
The role of the bombings in Japan's surrender, as well as the effects and justification of them, has been subject to much debate.
On August 15, 1945 Japan announced its surrender to the Allied Powers, signing the Instrument of Surrender on September 2 which officially ended World War II. Furthermore, the experience of bombing led post-war Japan to adopt Three Non-Nuclear Principles, which forbids Japan from nuclear armament.
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