"I had then set up a committee of top men and had asked them to study with great care the implications the new weapons might have for us. It was their recommendation that the bomb be used against the enemy as soon as it could be done. They recommended further that it should be used without specific warning I had realized, of course, that an atomic bomb explosion would inflict damage and casualties beyond imagination. On the other hand, the scientific advisors of the committee reported that no technical demonstration they might propose, such as over a deserted island, would be likely to bring the war to an end. It had to be used against an enemy target.
The final decision of where and when to use the atomic bomb was up to me. Let there be no mistake about it. I regarded the bomb as a military weapon and never doubted it should be used."
President Harry S. Truman