Japan marked 80 years since the atomic bombing of Hiroshima on Wednesday with a ceremony reminding the world of the horrors unleashed.

On a sweltering morning, hundreds of black-clad officials, students and survivors laid flowers at the memorial cenotaph, with the ruins of a domed building in the background, a stark reminder of the horrors that unfolded.

Hiroshima on Wednesday marked the 80th anniversary of the U.S. atomic bombing of the western Japanese city, with many aging survivors expressing frustration about the growing support of global leaders for nuclear weapons as a deterrence.