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Announcing the Use of the Atomic Bomb on Hiroshima
Harry S Truman
August 7, 1945


A short time ago an American airplane dropped one bomb on Hiroshima and destroyed its usefulness to the enemy. That bomb had more power that 20,000 tons of TNT.

The Japanese began the war from the air at Pearl Harbor. They have been repaid many fold and the end is not yet. With this bomb we have now added a new and revolutionary increase in destruction to supplement the growing power of our armed forces. In their present form these bombs are now in production and even more powerful forms are in development.

It is an atomic bomb. It is a harnessing of the basic power of the universe. The force from which the sun draws its power has been loosed against those who brought war to the Far East.

We have spent two billion dollars on the greatest scientific gamble in history and we have won. But the greatest marvel is not the size of the enterprise, its secrecy, nor its cost, but the achievement of scientific brains in making it work. And hardly less marvelous has been the capacity of industry to design and of labor to operate, the machines and methods to do things never done before. Both science and industry worked together under the direction of the United States Army, which achieved a unique success in an amazingly short time. It is doubtful if such another combination could be got [sic] together in the world. What has been done is the greatest achievement of organized science in history.

We are now prepared to destroy more rapidly and completely every productive enterprise the Japanese have in any city. We shall destroy their docks, their factories, and their communications. Let there be no mistake; we shall completely destroy Japan's power to make war.

It was to spare the Japanese people from utter destruction that the ultimatum of July 26 was issued at Potsdam. Their leaders promptly rejected that ultimatum. 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. Behind this air attack will follow sea and land forces in such numbers and power as they have not yet seen and with the fighting skill of which they are already aware.