Ok, this is from DEBKA, so take with a grain of salt, but if it's even 25% true, it's very scary!!
Al Qaeda Builds a Euro Army
According to French counter-intelligence, al Qaeda has recruited in France alone between 35,000 and 45,000 men and is organizing them into military-style units.
They meet regularly for training in the use of weapons and explosives, combat tactics and indoctrination and are controlled from local and district command centers under the organization’s national French command.
In Germany, Al Qaeda has recruited 25,000 to 30,000 men.
The British domestic intelligence agency MI5 estimates 10,000 faithful have joined up in Britain, providing Blunkett with more than ample cause for concern.