People gathered for a ceremony are seen above the Atomic Bomb Dome at the Peace Memorial Park in Hiroshima, western Japan, Sunday, Aug. 6, 2017, to mark the 72nd anniversary of the world's first atomic bombing that killed 140,000 people in 1945. Hiroshima's appeal of "never again" on the 72nd anniversary has acquired renewed urgency as North Korea moves ever closer to acquiring nuclear weapons. (Shingo Nishizume/Kyodo News via AP)
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