History 101 World politics 92 Politics and government 49 Foreign relations 41 Military policy 32 National security 29 Islam 27 Social conditions 24 Economic conditions 23 Military art and science 23 United States 23 Terrorism 22 Forecasting 19 Armed Forces 17 International relations 14 War on terrorism, 2001- 13 September 11 Terrorist Attacks, 2001 12 Social life and customs 12 War 12 Geography 11 Juvenile literature 11 Security, International 11 Thesis 11 Defenses 9 Dissertations, Academic 9 History, Military 9 Islam and politics 9 Technological innovations 9 Political aspects 8 Strategic aspects 8