On Intelligence: The History of Espionage and the Secret World

Wonderfully interesting overview of intelligence, from human spies to spy satellites to computer espionage. Peppered throughout are small case studies of actual historical situations (Manning, Snowden, Ames, the USS Liberty, etc.). Very enjoyable.

My only gripe is that the author injects personal opinions a bit too much. This is not a dispassionate analysis. The author often takes sides, and in some cases, seems to indict and make accusations as if they’re widely accepted, when they might not be.