- On Saturday, Egyptian cleric Omar Abdel-Rahman died in an American prison
- Peter Bergen: Rahman was the inspiration behind some of the worst modern terrorist attacks, including 9/11
- Bergen: His death will almost certainly spark calls from al Qaeda leaders for further anti-American attacks
Peter Bergen is CNN's National Security Analyst and the author of "The Osama bin Laden I Know," which this article draws upon in part.
(CNN)Omar Abdel-Rahman, the Egyptian cleric who inspired terrorist plots in New York during the early 1990s and who died in an American prison on Saturday, was also the spiritual guide of key 9/11 plotters.