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Years later, while imprisoned as coalition detainees, some of Zarqawi’s senior lieutenants described the AQI leader’s desire to incite a global sectarian war by comparing him to the Joker, Heath Ledger’s character in the 2008 movie, “The Dark Knight,” whose central desire was “to watch the world burn.”30
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U.S. Department of the Army (The U.S. Army in the Iraq War Volume 1: Invasion Insurgency Civil War 2003 – 2006)