Kerry visits Hiroshima memorial 7 decades after A-bomb

US Secretary of State John Kerry has arrived at the memorial to Hiroshima's atomic bombing, becoming the most senior American official to visit the site.

Kerry arrived with other foreign ministers of the Group of Seven industrialised nations today.

They are taking a tour of the Peace Memorial Park and Museum in the city where 140,000 Japanese died from the first of two atomic bombs the US dropped in 1945, in the final days of World War II.