The book, Unholy War: Terror in the Name of Islam, was written by John Louis. To first understand the book, the author behind it must be understood. He is an American professor of International Affairs and Islamic Studies at Georgetown University in Washington, D.C. He is also the director of the Prince Alwaleed Center for Muslim–Christian Understanding at Georgetown. Esposito was born in Brooklyn, New York City in 19 May 1940. He was brought up as Roman Catholic in an Italian neighborhood, and spent a decade in a Catholic monastery. After taking his first degree he worked as a management consultant and high-school teacher. He then received a master’s in theology at St. John's University. He earned a PhD at Temple University, Pennsylvania in
