Intelligence service -- Terrorism -- 3 Foreign relations -- 2 Government policy -- 2 National security -- 2 Governmental investigations -- 1 Intelligence service 1 more ... Nuclear weapons information -- 1 Planning. -- 1 Political violence -- 1 Politics and government -- 1 Prevention. -- 1 September 11 Terrorist Attacks, 2001 1 Subversive activities -- 1 Terrorism 1 War on Terrorism, 2001-2009 1 less ...