U.S. President Barack Obama puts arm around Japanese PM Abe after they laid wreaths in front of cenotaph as the atomic bomb dome is background at Hiroshima Peace Memorial Park in Hiroshima, Japan

U.S. President Barack Obama puts arm around Japanese PM Abe after they laid wreaths in front of cenotaph as the atomic bomb dome is background at Hiroshima Peace Memorial Park in Hiroshima, Japan

U.S. President Barack Obama (R) puts his arm around Japanese Prime Minister Shinzo Abe after they laid wreaths in front of a cenotaph as the atomic bomb dome is background at Hiroshima Peace Memorial Park in Hiroshima, Japan May 27, 2016. REUTERS/Kimimasa Mayama/Pool