Truman, in WW2.
Franklin Roosevelt- but he died before the atomic bomb was used. Harry Truman was the next president, and ordered the use of the atomic bomb.
President Truman.
FDR approved production, Truman approved use.
President Harry S. Truman made the decision to use the atomic bomb on Japan to end WW II
Harry S. Truman .
Harry Truman
President Truman.
princess patrick harwood President Truman
He and himself only.
That was President Truman's call.
Roosevelt made the decision to make the atomic bomb on October 9, 1941.As the Manhattan Project progressed Roosevelt followed developments with the assumption that the atomic bombs would be used "as made ready".Roosevelt died and when Truman is briefed on the atomic bomb he decides to change nothing.After the first two bombs are dropped on Japan and they indicate they will surrender, Truman makes the only decisionentirely his own about the atomic bomb during WW2 and orders the bombing stopped.
While the development of the atomic bomb was initiated under FDR, Harry S Truman was president when the final decision was made to drop the bomb.