Government policy -- Terrorism -- 50 Foreign relations -- 20 Prevention -- 16 History -- 12 Politics and government 11 Politics and government -- 11 more ... Congresses -- 10 Economic policy 10 Government policy 10 National security -- 10 Economic conditions -- 9 Economic policy -- 9 International business enterprises -- 9 Investments, Foreign -- 9 War on Terrorism, 2001-2009 9 Prevention. -- 8 Case studies 7 Economic conditions 7 Human rights -- 7 Nuclear weapons -- 7 Petroleum industry and trade -- 7 Refugees -- 7 Congresses 6 Emigration and immigration -- 6 War on terrorism, 2001- 6 Foreign relations 5 Islam 5 Palestinian Arabs -- 5 Religious aspects -- 5 less ...