Political aspects World politics -- 7 Petroleum industry and trade -- 3 Energy industries -- 2 Ethnic relations -- 2 Foreign relations -- 2 International relations 2 more ... Mass media -- 2 Communication, International 1 Communications, International 1 Culture conflict 1 Developing countries -- 1 Energy policy -- 1 Ethnic relations 1 Ethnicity 1 Gas industry -- 1 Human territoriality -- 1 International economic relations 1 Political aspects -- 1 Security, International 1 War and society 1 less ...