And can't recommend enough Legacy of Ashes itself for people who are interested in the CIA, 20th century US history, and modern statecraft.

If you don't have time for a 20-hour read, Adam Gopnik's New Yorker piece "Are Spies More Trouble Than They're Worth?" is a good 15-minute synopsis: https://www.newyorker.com/magazine/2019/09/02/are-spies-more...

Hadn’t seen it myself yet, thanks for the recommendation!