Foreign relations -- War on Terrorism, 2001-2009 2 Causes 1 Christianity and other religions -- 1 Government policy -- 1 Imperialism 1 Influence 1 more ... Iraq War, 2003-2011 -- 1 Islam 1 Military policy 1 National characteristics, American 1 National security -- 1 Political messianism -- 1 Psychological aspects. -- 1 Radicalism -- 1 September 11 Terrorist Attacks, 2001 -- 1 Terrorism -- 1 Weapons of mass destruction -- 1 less ...