Support WBURJapan Calls For Denuclearized World On 72nd Anniversary Of HiroshimaAmy HeldAugust 06, 2017 ShareSunday marked 72 years since the U.S. dropped one of two atomic bombs on Japan. On the eve of the anniversary, organizers of a peace event lit up torches on floats on the Motoyasu River next to the Atomic Bomb Dome in Hiroshima. (AP)