Terrorism -- Government policy -- 41 Foreign relations -- 29 Prevention -- 29 Prevention. -- 29 National security -- 20 War on Terrorism, 2001-2009 17 more ... September 11 Terrorist Attacks, 2001 15 History -- 12 Islam 11 Politics and government -- 11 Religious aspects -- 11 Terrorism 11 War on terrorism, 2001- 10 Civil defense -- 8 Prevention 8 Terrorists -- 8 Civil rights -- 7 Jihad 7 Political aspects -- 7 Islamic fundamentalism 6 Political aspects 6 Emergency management -- 5 Intelligence service -- 5 Islamic fundamentalism -- 5 Politics and government 5 Psychological aspects 5 Security measures 5 September 11 Terrorist Attacks, 2001 -- 5 Military policy 4 less ...