The Real News is that the Movie is Actually Based on History... E!Online reports that "'Kingdom' Comes to Copyright Spat." From the article: "James Reston Jr., a noted author and expert on the Crusades, is accusing the filmmakers of stealing parts of his 2001 tome, Warriors of God: Richard the Lionheart and Saladin in the Third Crusade, for the big-budget would-be blockbuster due out next week."