World politics Foreign relations 130 International relations 124 Military policy 70 History 58 National security 42 Security, International 38 War 32 Cold War 31 Politics and government 29 Terrorism 28 United States 28 Forecasting 22 Strategy 22 Armed Forces 17 International economic relations 15 Military art and science 15 Defenses 14 Geopolitics 13 Military history, Modern 13 Periodicals 13 September 11 Terrorist Attacks, 2001 13 Globalization 12 War on terrorism, 2001- 12 21st century 11 Balance of power 11 Nuclear weapons 11 Political aspects 11 Congresses 9 Economic history 9