Near and Distant Neighbours
Haslam, Jonathan (Institute for Advanced Study, Princeton, Institute for Advanced Study, Princeton, George F. Kennan Professor in the School of Historical Studies)
The first ever substantiated and complete history of Soviet intelligence from 1917 to the end of the Cold War. It covers all the main branches - the civilian (most famously embodied in the KGB) and their military rivals (the GRU), as well as their 'poor relations' in signals intelligence. Based on a mass of recently declassified material, the story can be told in full for the first time.