President Obama has become the first sitting U.S. president to visit the Japanese city of Hiroshima since U.S. warplanes dropped the first atomic bomb on August 6, 1945. The bomb killed 140,000 people and seriously injured another 100,000. Three days later, the U.S. dropped a second atomic bomb on Nagasaki, killing another 74,000 people. Obama spoke today at the Hiroshima Peace Memorial Park.

President Barack Obama: “Among those nations like my own that hold nuclear stockpiles, we must have the courage to escape the logic of fear and pursue a world without them. We may not realize this goal in my lifetime, but persistent effort can roll back the possibility of catastrophe.”