The History Hub on Instagram: "The Day Truman Realized He Was Alone In a pivotal moment in history, Harry Truman finds himself thrust into the role of President just hours after Franklin Roosevelt’s death. Suddenly, the enormity of global conflict rests on his shoulders, leaving him feeling as if the universe has collapsed upon him. As a Vice President kept at arm’s length from critical secrets, Truman’s initiation into leadership begins with the unsettling revelation of the Manhattan Project-a