U.S. Intelligence on Europe, 1945-1995

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• Communications security x
• 1 Aeroflot
• 1 Autovon
• 1 British intelligence services
• 1 Cipher machines
• 1 COMINT
• 2 COMSEC
• 1 Convincing cover story
• 1 Cryptographic support
• 2 Deficiencies
• 1 East German intelligence services
• 1 Electronic Security Command
• 1 Eric Jones
• 1 GCHQ
• 1 German Bundespost telephone network
• 1 GRU
• 1 Intelligence facilities
• 1 John Tiltman
• 1 Listening posts
• 1 National Security Agency
• 1 Operational security
• 2 Portugal
• 1 Salazar
• 2 SIGINT
• 1 SMLM
• 1 Soviet intelligence services
• 1 Soviet Military Liaison Mission
• 1 Strip cipher
• 2 Turkey
• 1 West Germany