Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds.

U.S. President Barack Obama hugs Shigeaki Mori, an atomic bomb survivor; creator of the memorial for American WWII POWs killed at Hiroshima, during a ceremony at Hiroshima Peace Memorial Park in Hiroshima, western Japan, Friday, May 27, 2016. Obama on Friday became the first sitting U.S. president to visit the site of the world's first atomic bomb attack, bringing global attention both to survivors and to his unfulfilled vision of a world without nuclear weapons. (AP Photo Carolyn Kaster)
U.S. President Barack Obama hugs Shigeaki Mori, an atomic bomb survivor; creator of the memorial for American WWII POWs killed at Hiroshima, during a ceremony at Hiroshima Peace Memorial Park in Hiroshima, western Japan, Friday, May 27, 2016. Obama on Friday became the first sitting U.S. president to visit the site of the world's first atomic bomb attack, bringing global attention both to survivors and to his unfulfilled vision of a world without nuclear weapons. (AP Photo Carolyn Kaster)

    JUST WATCHED

    Obama becomes first sitting president to visit Hiroshima

MUST WATCH

Obama becomes first sitting president to visit Hiroshima

President Obama calls for a nuclear-free world in his historic visit to Hiroshima, Japan. CNN's Michelle Kosinski reports.

Obama becomes first sitting president to visit Hiroshima

President Obama calls for a nuclear-free world in his historic visit to Hiroshima, Japan. CNN's Michelle Kosinski reports.