International cooperation Terrorism -- 13 International relations 11 Prevention -- 9 Security, International 9 Environmental aspects 7 Environmental policy -- 7 more ... Foreign relations -- 6 National security -- 6 Democracy 5 International economic relations 5 Political aspects 5 Climatic changes -- 4 Democratization -- 4 Economic development 4 Economic development -- 4 Economic policy 4 Economic policy -- 4 International relations -- 4 Philosophy 4 Prevention 4 Terrorism 4 Environmental protection -- 3 Foreign economic relations 3 Globalization 3 Law and legislation 3 Military policy 3 Weapons of mass destruction 3 World politics -- 3 Citizen participation 2 less ...