> Only two nuclear weapons have been deployed ever.

… intentionally; if you want to feel a stark sense of wonder that we ever survived the height of the nuclear-weapons age, you could do worse than to read Schlosser's "Command and Control" (https://www.amazon.com/Command-Control-Damascus-Accident-Ill...).

"Command and Control: Nuclear Weapons, the Damascus Accident, and the Illusion of Safety" is pretty good. I read it a while back after seeing it linked here.

https://www.amazon.com/dp/B00C5R7F8G?ref_=k4w_ss_dp_lp