Well, if this report is true, we now have a count of the tiny minority of extremists: evidently, there are 18,000 of them. But of course Reuters — and few analysts — seem to care how these 18,000 were recruited, and whether such recruitment efforts are still effective among Muslims worldwide.

From [1] Reuters, with thanks to nevermindlv:

LONDON (Reuters) - Al Qaeda has more than 18,000 militants ready to strike and the U.S.-led occupation of Iraq has accelerated recruitment to the ranks of Osama bin Laden's network, a leading London think-tank says.