Clifton Truman Daniel (3rd L), a grandson of former US president Harry Truman, who authorised the atomic bombing of Japan during World War II, visits to the Hiroshima Peace Memorial Museum on August 4, 2012 ahead of the memorial service to commemorate the anniversary of the 1945 atomic bombing on August 6. Daniel is in Japan to attend the annual memorial services on August 6 in Hiroshima and August 9 in Nagasaki for the first time after being invited by an anti-nuclear group. AFP PHOTO / KAZUHIRO NOGI (Photo credit should read KAZUHIRO NOGI/AFP/GettyImages)