On August 6, 1945, and again on August 9, 1945, President Truman called for atomic bombs to be dropped on Hiroshima, and Nagasaki, Japan. It is believed that over 200,000 people were killed by the atomic bombs. Many historians believe that those atomic bombs were sent as a warning to Josef Stalin to show him that aggressive, hostile post-war negotiations would not be tolerated. On September 2, 1945, World War II ended