6 August 1945. In a blast equal to 12–15,000 tons of TNT, ‘Little Boy’ destroys 12 square kilometres of the city. About 75,000 Hiroshima residents are killed and 100,000 or more will succumb to effects of the bomb within four months. Military members of the Japanese government dismiss the idea that this is a nuclear attack or that it could be repeated.
6 August 1945. A White House statement announces the bombing of Hiroshima and quotes the response of President Truman, who is travelling back from the Potsdam Conference. The president warns Japan’s apparently intransigent leaders: ‘If they do not now accept our terms they may expect a rain of ruin from the air, the like of which has never been seen on this earth.’