Subject
Intelligence service History
27
History
19
Cold War
5
Soviet Union Foreign relations
5
United States Foreign relations
4
Cryptography History
3
Officials and employees
3
Spies
3
Arms race
2
Cold War History
2
Czechoslovakia Foreign relations
2
Czechoslovakia History
2
Espionage, American History
2
Intelligence service Technological innovations
2
War criminals
2
World War, 1939-1945 Collaborationists
2
World War, 1939-1945 Military intelligence
2
Communications, Military
1
Cuban Missile Crisis, 1962
1
Electronic surveillance
1
Europe, Eastern Foreign relations
1
Europe, Eastern History, Military
1
Hue, Battle of, Huê,́ Vietnam, 1968
1
Intelligence officers
1
Intelligence service
1
Israel-Arab War, 1973
1
Israel-Arab War, 1973 Military intelligence
1
Military bases, Soviet
1
Military intelligence
1
Military intelligence History
1
National security Decision making
1
Soviet Union Economic policy
1
Soviet Union History
1
Soviet Union Military policy
1
Soviet Union Officials and employees
1
Soviet Union Politics and government
1
Tet Offensive, 1968
1
United States Politics and government
1
Vietnam War, 1961-1975 Campaigns
1
Women intelligence officers
1
Women spies
1
World War, 1939-1945 Secret service
1