 After the Gen 75 Committee decided that the nuclear weapons project should be the responsibility of the Ministry of Supply, the Minister of Supply, John Wilmot, was added.As reports came in of the devastation caused by the atomic bombing of Hiroshima and Nagasaki, Attlee considered how nuclear weapons had changed the nature of warfare and international relations.He raised the matter with the Gen 75 Committee, and Bevin suggested that a first step should be a letter to Truman suggesting a review of policy.