The bombs killed as many as 140,000 people in Hiroshima and 80,000 in Nagasaki by the end of 1945,[1] roughly half on the days of the bombings. Since then, thousands more have died from injuries or illness attributed to exposure to radiation released by the bombs.[2] In both cities, the overwhelming majority of the dead were civilians.
Six days after the detonation over Nagasaki, on August 15, Japan announced its surrender to the Allied Powers