May take some digging and some hard reading, and some analysis - but "Follow the money" - from the gas pump via ExxonMobil to the Royal House of Saud to a myriad of "Charities" to the terrorists --
---House of Bush, House of Saud: The Secret Relationship Between the World's Two Most Powerful Dynasties by Craig Unger
---A Century Of War : Anglo-American Oil Politics and the New World Order By F. William Engdahl
---The Missing Peace : The Inside Story of the Fight for Middle East Peace By Dennis Ross
---Sleeping With the Devil: How Washington Sold Our Soul for Saudi Crude By Robert Baer
---The Exception to the Rulers : Exposing Oily Politicians, War Profiteers, and the Media That Love Them by: Amy Goodman, David Goodman
---The Economic War Against the Jews by Walter Nelson and Terrence Prittie
---Twilight in the Desert: The Coming Saudi Oil Shock and the World Economy by Matthew Simmons
---Funding Evil: How Terrorism Is Financed--and How to Stop It
By Rachel Ehrenfeld
---Prize: The Epic Quest for Oil, Money, and Power by Daniel Yergin