HIROSHIMA — A silent prayer was held in Japan on Wednesday morning as it marked 80 years since the United States dropped an atomic bomb on the city of Hiroshima.Japanese prime minister Shigeru IshibaHIROSHIMA — A silent prayer was held in Japan on Wednesday morning as it marked 80 years since the United States dropped an atomic bomb on the city of Hiroshima.Japanese prime minister Shigeru Ishiba