National security -- Foreign relations -- 30 Military policy 25 Foreign relations 20 Politics and government -- 18 Defenses 13 World politics -- 10 more ... Terrorism -- 9 Congresses -- 7 Politics and government 7 Congresses 6 Prevention -- 6 Security, International 6 Strategic aspects 6 Armed Forces 5 Economic integration 5 History -- 5 Regionalism -- 5 Relations -- 5 Government policy -- 4 International cooperation 4 International relations 4 Civil rights -- 3 Economic aspects -- 3 Economic conditions -- 3 Economic policy 3 Foreign economic relations -- 3 Security, International -- 3 Southeast Asia -- 3 Appropriations and expenditures 2 less ...