History 188 Foreign relations 59 Cold War 49 Espionage, Soviet 27 Histoire 27 Spies 27 Politics and government 19 more ... Nuclear arms control 15 Espionage, American 13 Nuclear weapons 13 Diplomatic relations 12 Intelligence service 12 Relations extérieures 11 Espionage 10 World politics 10 Space race 9 Arms control 8 Political aspects 8 Communism 7 Cryptography 7 Military policy 7 National security 7 Relations 7 World War, 1939-1945 7 Exploration 6 Guerre froide 6 History and criticism 6 Political and social views 6 Anti-communist movements 5 Astronautics and state 5 less ...