An unidentified man stands next to a tiled fireplace where a house once stood in Hiroshima, Japan, on Sept. 7, 1945. The vast ruin is a result of "Little Boy," the uranium atomic bomb detonated on Aug. 6 by the U.S.
"Little Boy"

Hiroshima Mayor, Survivors, and Activists Call for Nuclear Weapons Ban 73 Years After US Bombing

“World leaders should gather in the A-bombed cities, encounter our tragedy, and, at a minimum, set a course toward freedom from nuclear weapons.”