Foreign relations -- 2 Influence September 11 Terrorist Attacks, 2001 -- 2 Christianity and other religions -- 1 Cold War -- 1 Diplomatic history 1 Imperialism 1 more ... Islam 1 Military policy 1 National characteristics, American 1 Negotiation -- 1 Political messianism -- 1 Psychological aspects. -- 1 Radicalism -- 1 War on Terrorism, 2001 -- 1 War on Terrorism, 2001-2009 1 less ...