Political aspects Political aspects -- Biography -- 1 Diplomacy -- 1 Diplomats -- 1 Energy policy -- 1 Environmental aspects 1 more ... Foreign economic relations 1 Foreign public opinion 1 Foreign relations -- 1 Great powers 1 History 1 International economic relations -- 1 Petroleum industry and trade -- 1 Philosophy 1 Realism -- 1 War on Terrorism, 2001 -- 1 less ...