Who advised truman on bomb?

President Harry S. Truman received advice on the use of the atomic bomb primarily from his scientific advisors, including figures like J. Robert Oppenheimer and General Leslie Groves, who oversaw the Manhattan Project. He also consulted with military leaders, such as Secretary of War Henry Stimson, who argued for its use to expedite Japan's surrender and minimize American casualties in a potential invasion. Ultimately, Truman weighed these recommendations alongside his own convictions about ending the war swiftly.