https://www.amazon.com/Racing-Enemy-Stalin-Truman-Surrender/dp/0674022416?crid=L9TH209B8FXW&qid=1651353080&sr=8-1&linkCode=ll1&tag=000000123-20&linkId=3ac43ce2aa413a2bfacdceadc02cf5cb&language=en_US&ref_=as_li_ss_tl
Even if you want to debate Hiroshima. No one can deny that Nagasaki had any need. They were ready to surrender and various government/military officials pretty much admitted that they went for it because "we had another one"