http://www.csmonitor.com/2006/0413/p06s02-woeu.html
Geoff Pingree and Lisa Abend
"A report released this week by a Spanish judge illuminates one of the most pressing questions arising from both the bombings in Madrid and, later, in London: Did Al Qaeda operatives direct these assaults on Europe, or simply inspire them? The 1,470-page summary by investigative magistrate Juan del Olmo indicates that the Madrid bombers were actually members of an independent network of Salafist radicals active in North Africa, and that Osama bin Laden's organization merely exercised a kind of guiding influence. This week it was reported that British officials have determined the London bombers were also an autonomous cell that drew little more than inspiration from Al Qaeda."