He demanded Japan's government represent the wills of atomic bombing survivors and sign a U.N. nuclear weapons ban treaty. The U.S. attack on Hiroshima on Aug. 6, 1945, killed 140,000 people. The bomb dropped three days later on Nagasaki killed another 70,000 before Japan's surrender ended World War II.
The Hiroshima anniversary ceremony came hours after North Korea launched projectiles into the sea. Its recent weapons tests follow a stalemate in negotiations over its nuclear weapons.