4.0

The first surprise: this novel wasn't in the fiction section of the library, but was as upstairs in a war/military section. The second surprise, which maybe explains the first, was the notes and references at the end to actual events. Context and timing have been shifted, but some of the behaviours of the cast are based on reality.

The book is an analysis of events and decisions leading to nuclear attacks. It's told as a summary of gathered testimony from survivors, giving you the timeline of events and a taste of being in the room when decisions were made. It was a page-turner for me.