"Little Boy was the codename of the atomic bomb dropped on Hiroshima, on August 6, 1945" by the US Air Force, the first atomic bomb ever used as a weapon. Three days later, the Fat Man atomic bomb was dropped on Nagasaki. Both cities and 200,000 people were instantly destroyed, and this video shows how. The US is the only country that has used nuclear weapons in war or against civilian populations.

Source: BBC's Hiroshima (2005)  |  Was it Necessary? One, Two, Three, Four, Five