Foreign relations -- 13 National security -- 13 Defenses 10 Politics and government -- 7 Military policy 6 Armed Forces 5 North Atlantic Treaty Organization 5 more ... Foreign relations 4 Defenses -- 3 Security, International 3 Strategic aspects 3 World politics -- 3 Congresses 2 Congresses -- 2 Foreign economic relations -- 2 History 2 History -- 2 International relations 2 Military assistance, American -- 2 Military relations -- 2 Alliance 1 Appropriations and expenditures 1 Armed Forces -- 1 Armed forces 1 Armed forces -- 1 Deterrence (Strategy) 1 Developing countries -- 1 Economic aspects 1 Economic integration 1 European Union 1 less ...