August 6, 1945 - Hiroshima & Nagasaki

The culmination of the Manhattan Project unleashed a destructive force unlike anything the world had ever seen. On 06 August, 1945, the United States B-29 Superfortress detonated a nuclear fission atomic weapon on the city of Hiroshima, Japan. This uranium atomic weapon, code named “Little Boy”, instantly destroyed the city, and killed 90,000-140,000 people, most of whom were civilians. Another B-29 dropped a plutonium implosion bomb (“Fat Man”) on Nagasaki three days later.

World War II, after the explosion of the atom bomb in August 1945, Hiroshima, Japan. (Photo by: Universal History Archive/UIG via Getty Images)

Some scholars see the use of nuclear weapons against the Japan as the first shot of the Cold War; as it kept the USSR from entering the war against Japan, allowing the Americans to accept Japanese surrender alone. It also was a tangible sign that the US would be willing to do act aggressively on the world stage to protect and promote its vision and values.