Mentioning previous answers is a starting point, not to discourage follow-on questions, data, or debate.

There's a section of the AskHistorians FAQ about the atomic bomb: "The atomic bombs, aka questions /u/restricteddata has answered", at https://www.reddit.com/r/AskHistorians/wiki/faq/militaryhistory/wwii/usa#wiki_the_atomic_bombs.2C_aka_questions_.2Fu.2Frestricteddata_has_answered There's a lot of discussion of why bombs, why they were being used, when they were dropped and why, and such.