Al Qaeda? They blow stuff up?

I am just now reading the latest great Bush-bashing from former Reaganite Paul Craig Roberts when I come across this paragraph:

Syria had absolutely nothing to gain from the assassination of former Lebanese prime Minister Hariri. In fact, the assassination was a catastrophe for the Syrian government. It is Osama bin Laden's aim, and perhaps Iran's, to destabilize Lebanon and Syria in order to draw the US in deeper. Instability serves bin Laden's revolutionary purposes and aids Iran by creating new problems for the US in the region.

And I realize that this is the first time I've seen anyone suggest that al Qaeda might have been behind the Hariri assassination. I've seen Syria, Hezbollah, Israel and the US all suggested--but why not al Qaeda?

Of course, for the Bushies every terrorist attack is not a crime to be investigated but an opportunity to be exploited.