Foreign relations -- 250 History -- 99 Politics and government -- 88 Terrorism -- 79 National security -- 68 Military policy 44 Government policy -- 43 more ... Relations -- 42 Foreign economic relations -- 38 Presidents -- 38 Politics and government 33 World politics -- 32 Political aspects -- 28 Prevention. -- 26 Economic conditions -- 25 Military relations -- 23 Prevention -- 23 Public opinion -- 21 Law and legislation -- 20 Social conditions -- 20 Biography -- 19 Civil rights -- 18 Democracy -- 18 Intelligence service -- 18 History 17 Congresses -- 16 Election -- 16 Nuclear arms control -- 15 Nuclear weapons -- 14 Commerce -- 13 less ...