US President Harry S Truman wanted the Japanese to surrender as quickly as possible so he could save lives. The atomic bomb was a deadly new weapon and President Truman hoped the massive destruction it caused would shock the Japanese into realising they had to surrender.
Furthermore, why was Hiroshima chosen as the bombing site?
Hiroshima was chosen because it had not been targeted during the US Air Force's conventional bombing raids on Japan, and was therefore regarded as being a suitable place to test the effects of an atomic bomb. Among those in the plane that dropped the bomb on Nagasaki was the British pilot Leonard Cheshire.
Why did US bomb Nagasaki?
Still, Hiroshima and Nagasaki will remain a burden on American conscience — Hiroshima because it was the world's first atomic bombing, setting a precedent, and Nagasaki because it was a blatantly wanton act. World War II reached its savage end in Hiroshima and Nagasaki only to spawn the dawn of a dangerous nuclear age.
Did US warn Japan of atomic bomb?
The fact is that atomic bomb warning leaflets were dropped on Japanese cities, but only after Hiroshima and Nagasaki had been destroyed. The hard truth is that the atomic bombings were unnecessary.
Is Hiroshima still radioactive today?
The radiation in Hiroshima and Nagasaki today is on a par with the extremely low levels of background radiation (natural radioactivity) present anywhere on Earth. It has no effect on human bodies. Roughly 80% of all residual radiation was emitted within 24 hours.