Wow. Those 28 classified pages of the 9/11 commission report allegedly had information linking high level Saudi's (the Saudi state) to the 15 / 19 Saudi hijackers of 9/11.
The Bush administration classified them...now it seems like the Obama administration is about to de-classify them.
Saudi Arabia has been funding Wahabi madrasas for years, both inside and outside of their country. These are the places where children can only read the Quran and are fed a version of Islam where if you aren't a Wahabbi Muslim, you need to die.
Everyone's known about this for years. The reason why they're doing this? Bin Laden, et al, believed the house of Saud to be apostates. Out of their own self interest, they've been "buying off" these lunatics and some people reportedly in the family share this religious belief.
So, no...terrorism isn't by "Afghani's in caves". 9/11 was an act of war...and the U.S. government under George W. Bush not only launched a world wide war that has lasted longer than World War 2 against countries that had nothing to do with 9/11, but they also covered up the Saudi's involvement in it. Allegedly.