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