Most respected scholars of Islamism agree that Al-Qaeda doesn't have a network of 'cells'. It has no organisational structure and no hierarchy. Islamists radical approach Bin Laden on an ad hoc basis and ask him for money.
It was only 'given' a structure by the US authorities because, in order to prosecute Bin Laden using laws created to bring down the mafia, they needed to paint him as the head of an organised body with a prosecutable chain of command between him and the US embassy bombers.
Sorry but this axis of evil reminds me of when the US government tried to suggest that most terrorist organisations - from the IRA to the PLO - were part of a Soviet terror network, because the defence secretary had read about it in a book.
When he asked the CIA to prepare a dossier on the subject, they told him they couldn't. Because it was utterly false.
When he pointed to the evidence in the book he'd read, they told him that they knew it to be untrue, because they were the ones who had made it up. After he'd ask them to.
Ah, the wheels of government.