Government policy -- 24 Terrorism -- 24 Foreign relations -- 10 War on Terrorism, 2001-2009 6 National security -- 5 Prevention. -- 5 September 11 Terrorist Attacks, 2001 5 more ... War on terrorism, 2001- 5 Terrorism 4 Intelligence service -- 3 Jihad 3 Influence 2 Islam 2 Politics and government -- 2 Prevention -- 2 Religious aspects -- 2 Terrorists -- 2 Biography -- 1 Civil rights -- 1 Cold War -- 1 Cross- cultural studies 1 Democracy -- 1 Evaluation. -- 1 Foreign public opinion 1 Foreign relations 1 Government policy 1 Governmental investigations -- 1 History -- 1 History, Military -- 1 Insurgency -- 1 less ...