Foreign relations History 57 Cold War 53 Politics and government 37 World politics 29 World War, 1939-1945 22 Diplomatic history 20 Communism 13 National security 9 Soviet Union 9 Relations 8 Cuban Missile Crisis, 1962 7 Espionage, Soviet 7 Military policy 7 Biography 5 Detente 5 Diplomats 5 International relations 5 Spies 5 Ambassadors 4 Social aspects 4 Sources 4 Addresses, essays, lectures 3 Berlin Wall, Berlin, Germany, 1961-1989 3 Causes 3 Cryptography 3 Developing countries 3 Economic conditions 3 German reunification question (1949-1990) 3 Ideology 3