U.S. Secretary of State John Kerry (2nd L) prepares to lay a wreath at the cenotaph with Japan's Foreign Minister Fumio Kishida (L), Britain's Foreign Minister Philip Hammond and other fellow G7 foreign ministers at Hiroshima Peace Memorial Park and Museum in Hiroshima, Japan, in this photo released by Kyodo April 11, 2016. Mandatory credit REUTERS/Kyodo  ATTENTION EDITORS - FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. MANDATORY CREDIT. JAPAN OUT. NO COMMERCIAL OR