U.S. President Barack Obama Visits Hiroshima [Getty Images]

U.S. President Barack Obama, right, stands as Shinzo Abe, Japan's primer minister, carries a wreath in front of the cenotaph at Hiroshima Peace Memorial Park in Hiroshima, Japan, on Friday, May 27, 2016. Nearly 71 years after U.S. forces dropped a devastating nuclear bomb on Hiroshima, Obama became the first American leader to set foot on the soil where so many people died. Photographer: Akio Kon/Bloomberg via Getty Images *** Local Captions *** Barack Obama; Shinzo Abe

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