International cooperation International relations 20 Security, International 19 Environmental policy -- 18 Terrorism -- 17 Prevention -- 14 Foreign relations -- 13 more ... Environmental aspects 12 International economic relations 12 National security -- 12 Economic development -- 11 Environmental protection -- 10 Political aspects 9 Climatic changes -- 7 Law and legislation 7 Philosophy 7 World politics -- 7 Democracy 6 Economic conditions 6 Economic policy 6 Globalization 6 International relations -- 6 Terrorism 6 Commercial policy 5 Democratization -- 5 Economic development 5 Foreign economic relations 5 International organization 5 Prevention 5 Refugees -- 5 less ...