World politics Foreign relations 126 International relations 117 Military policy 67 History 55 National security 40 Security, International 37 War 32 Cold War 29 Politics and government 29 Terrorism 28 United States 28 Forecasting 22 Strategy 19 Armed Forces 17 International economic relations 15 Military art and science 15 Defenses 13 Military history, Modern 13 Geopolitics 12 Periodicals 12 September 11 Terrorist Attacks, 2001 12 21st century 11 Nuclear weapons 11 Political aspects 11 War on terrorism, 2001- 11 Balance of power 10 Congresses 9 Economic history 9 Globalization 9