International cooperation Security, International 10 Environmental policy -- 8 International relations 7 Prevention -- 6 Terrorism -- 6 Economic development -- 5 more ... Environmental protection -- 5 National security -- 5 Foreign relations -- 4 International economic relations 4 International organization 4 Climatic changes -- 3 Commercial policy 3 Economic conditions 3 Environmental aspects 3 Globalization 3 Government policy -- 3 International economic relations -- 3 Law and legislation 3 Philosophy 3 Research -- 3 Decision making 2 Developing countries 2 Economic aspects 2 Economic policy 2 Environmental management -- 2 Environmental policy 2 Foreign relations 2 Global environmental change -- 2 less ...