From what I've been reading in Against All Enemies, it was from Iran that the Hezbollah originated and from which alot of the terrorist organizations evolved. According to Clarke, after the first Gulf War, the Saudi made a deal with Iran to stop the terrorist attacks in Saudi and the Saudi's agree to not allow the US to attack Iran from their soil.... a rather interesting history laid out in the book.
Sara
"I never give them hell. I just tell the truth and they think it's hell." - Harry Truman