By Victor Davis Hanson, Townhall - This month marks the 75th anniversary of the dropping of two atomic bombs on Japan, at Hiroshima on Aug. 6, and Nagasaki on Aug. 9... Each year, Americans argue about our supposed moral shortcomings for being the only nation to have used an atomic weapon in war... But what were the alternatives that Truman faced had he not dropped the bombs that precipitated Japan's agreement to surrender less than a week after the bombing of Nagasaki and formally on Sept. 2?