abstract:Dr Thomas Asbridge is a University of London medieval history scholar. He is the author of The First Crusade: A New History, a book which describes the background, events, and consequences of the First Crusade, "The Crusades: The War for the Holy Land", a book providing a view on the crusading movement, portraying the ideas of justified violence and jihad and The Creation of the Principality of Antioch,1098-1130Asbridge(2000) (Woodbridge.