World politics Foreign relations 53 Military policy 23 National security 15 International relations 10 United States 10 Forecasting 7 History 6 Defenses 5 War on terrorism, 2001- 5 21st century 4 Armed Forces 4 Cold War 3 Forecasts 3 Hegemony 3 Military planning 3 Nuclear weapons 3 Political aspects 3 Security, International 3 Twenty-first century 3 Air defenses 2 Arms race 2 Balance of power 2 Case studies 2 Causes 2 Economic policy 2 Great Britain 2 Intelligence service 2 Nuclear arms control 2 Periodicals 2