World politics International relations 19 Foreign relations 17 Security, International 11 National security 8 Armed Forces 7 Military policy 7 Forecasting 6 Globalization 5 History 5 Politics and government 5 United States 4 Economic history 3 Influence 3 International economic relations 3 Nuclear arms control 3 Nuclear weapons 3 Political aspects 3 September 11 Terrorist Attacks, 2001 3 Terrorism 3 War 3 Weapons of mass destruction 3 Air defenses 2 Air power 2 Arms race 2 Biography 2 Biological weapons 2 Capitalism 2 Case studies 2 Cold War 2