Here is some interesting analysis http://www.abs-cbnnews.com/world/11/...thods-ideology

Maria A. Ressa is the author of Seeds of Terror: An Eyewitness Account of Al-Qaeda’s Newest Center of Operations in Southeast Asia. She is senior vice president for news and current affairs of ABS-CBN and managing director of ANC (ABS-CBN News Channel). She was CNN’s correspondent for nearly two decades.