Government policy -- Terrorism -- 53 Foreign relations -- 24 Prevention -- 19 Government policy 14 History -- 14 Politics and government 13 more ... Economic conditions -- 12 Economic policy 12 Economic policy -- 12 Investments, Foreign -- 12 Politics and government -- 12 Congresses -- 11 National security -- 11 Economic conditions 10 International business enterprises -- 10 Nuclear weapons -- 10 Petroleum industry and trade -- 9 War on Terrorism, 2001-2009 9 Foreign relations 8 Prevention. -- 8 Refugees -- 8 Case studies 7 Congresses 7 Economic aspects -- 7 Emigration and immigration -- 7 Human rights -- 7 Industrial policy -- 7 Agriculture and state -- 6 Case studies -- 6 less ...