When the Enola Gay dropped an atomic bomb on Hiroshima, Truman understood the repercussions. "This places a terrible responsibility upon myself and upon the War Department," he said.

There are other countries with nuclear weapons who might see “pre-emptive” strikes as the most rational self-defense ...

It was the greatest experiment ever conducted on U.S. soil. Discover 20 little-known facts about the Manhattan project.

Truman informs the nation that an atomic weapon has been detonated in Japan. Sixteen hours ago an American airplane dropped one bomb on Hiroshima and destroyed its usefulness to the enemy.

At various times Truman indicated his support for most of ... Two weeks later, with no explicit prior warning, an atomic bomb wiped out the seventh largest city in Japan. What happened?

President Truman issues the enemy an ultimatum ... For the men who developed the atomic bomb and masterminded the mission, their families and the rest of the world finally know the top secret ...

President Truman raised the ante ... Race for the Superbomb,” the role of the atomic bomb was undefined. “It’s one of the biggest dogs that did not bark in the entire cold war,” says ...

President Truman justified his decision by pointing ... of the events in the days and hours before the dropping of the atomic bomb on Hiroshima, Japan. WW2: How close did D-Day come to failure?

In the 1950s, Nevada was the main location for the U.S. military’s atomic bomb tests. A mere 45 miles from Las Vegas, President Harry Truman established a 680-square-mile atomic testing ground ...