The first half of the book is about the science and scientists behind, and the actual making of, the bombs that were dropped on Hiroshima and Nagasaki - this was not what I’d expected, as it’s not what the book itself suggests! My brain just isn’t sufficiently maths/physics-wired to have followed the author’s attempts at straightforward explanation here; I could tell he was trying to put things simply and clearly, but I couldn’t keep hold of the thread. There were plenty of points of interest nonetheless, but I doubt I could tell you any more about nuclear fission than I could before.
Otherwise, there was still honestly very little about what happened in Hiroshima itself (or Nagasaki, but that was never implied to be the focus). I’m slightly glad of this, as the one chapter of detail was truly grim. I did learn more about the political and more general state of Japan in 1945, but this was all rushed in comparison to the time spent on the bomb, the bombers, and the aftermath… for the Allies. Given the book’s title, this focus felt incongruous to say the least.
I was also jarred by the author’s occasional snide remark suggesting his political leanings - entirely unnecessary, and really quite weird in this kind of book. Edit those out and change the title, and this is a good book, if it’s what you’re looking for.