"By the way, Osama Bin Laden's anger towards us was our presence in Saudi Arabia."
True. And our troops were in Saudi because of the crap Saddam was pulling.
We had troops in Saudi Arabia decades before Saddam became a problem.
I hear we started putting troops in Saudi Arabia around 40 years ago--as part of the deal we made with the Saudi Royal family: to protect the Royals from being overthrown.
The info is out there. It isn't hard to find. Just Google it up: http://www.google.com/