Politics and government -- 9 Foreign relations -- 8 History -- 6 Politics and government 4 Congresses -- 3 Terrorism -- 3 Biography -- 2 more ... Economic conditions 2 Economic sanctions, American 2 Government policy -- 2 Heads of state -- 2 Prevention -- 2 Relations 2 Social policy 2 Case studies 1 Charges and spesifications (courts-martial) -- 1 Civil War, 1965- 1 Civil war,2011- -- 1 Commerce -- 1 Congresses 1 Consuls -- 1 Criminal liability -- 1 Diaries -- 1 Economic development -- 1 Foreign relations 1 Gas industry -- 1 Guerrila warfare -- 1 International organization 1 Law and legislation sources 1 Petroleum industry and trade -- 1 less ...