In your opinion, what were the main reasons US President Harry Truman decided to use atomic bombs on Japan in August 1945? Do you agree or disagree with his decision?

I need help with a History question. All explanations and answers will be used to help me learn.

(Required Sources: “Thank God for the Atomic Bomb” (Links to an external site.) by Paul Fussell; “Hiroshima: Needless Slaughter, Useful Terror” (Links to an external site.) by William Blum; Extra! Update, “Media to Smithsonian: History is Bunk” (Links to an external site.); Government documents (Links to an external site.) (Stimson’s diary entry and President Truman’s meeting with advisers); Basic Information on the Bomb (Links to an external site.); “Second Guessing Hiroshima” (Links to an external site.); “Hiroshima: Was it Necessary?” (Links to an external site.) by Doug Long; A Petition to the President of the United States (Links to an external site.); “The Decision That Launched the Enola Gay” (Links to an external site.) by John Correll; “Diary Shows Tojo Resisted Surrender Till End” (Links to an external site.) by Mari Yamaguchi; and “The Day Hiroshima turned into Hell” (Links to an external site.) by Cajsa Wikstrom; view the video clip)

***3-4 Pages doubled spaced, 12 pt font, sentences should be concise, only 2-4 sources from the above list is needed, the assignment also needs to have a sample outline attached***