Military policy War on Terrorism, 2001-2009 Foreign relations -- 2 Iraq War, 2003-2011 2 Christianity and other religions -- 1 Imperialism 1 Influence 1 more ... Islam 1 Mercenary troops -- 1 National characteristics, American 1 Political messianism -- 1 Politics and government -- 1 Psychological aspects. -- 1 Radicalism -- 1 September 11 Terrorist Attacks, 2001 1 September 11 Terrorist Attacks, 2001 -- 1 less ...