The mayor of Hiroshima called out nuclear-armed nations Wednesday as Japan marked the 80th anniversary of the atomic bombing of his city.

The Pacific island of Tinian, which served as the launching point for the U.S. bombers that dropped the atom bombs on Hiroshima and

The atomic bombings of Hiroshima on August 6, 1945, and Nagasaki three days later brought a scale of destruction the world had never seen. Many who survived the blasts died in the weeks, months and years that followed.