Terrorism -- War on terrorism, 2001- Foreign relations -- 6 Government policy -- 6 Prevention 6 September 11 Terrorist Attacks, 2001 6 Politics and government -- 4 more ... Prevention -- 4 National security -- 3 International cooperation 2 Islam 2 Islam and politics -- 2 Military policy 2 Nationalism 2 Qaida (Organization) 2 Religious aspects -- 2 Security, International 2 Terrorism 2 Civil rights -- 1 Cold War -- 1 Globalization -- 1 Government policy 1 Homeland security 1 Ideology 1 Influence 1 Infrastructure -- 1 International relations 1 Islam and terrorism -- 1 Jihad 1 National security 1 less ...