Intelligence service National security 120 History 118 Terrorism 85 Prevention 75 Foreign relations 43 Law and legislation 41 more ... Military intelligence 37 Espionage 36 Government policy 33 Evaluation 32 Politics and government 30 Secret service 27 Diplomatic relations 25 Cold War 23 Internal security 22 Management 22 Electronic surveillance 21 Intelligence officers 17 Spies 16 Civil rights 15 Interagency coordination 14 Political aspects 14 Privacy, Right of 14 Methodology 12 Military policy 10 Officials and employees 10 Reorganization 10 Weapons of mass destruction 10 Espionage, American 9 less ...