Current and former intelligence officials said that although they were able to at least partly track Vinas, they fear that the informal network of militants in Pakistan that he tapped into is widespread and below the radar of U.S. intelligence gathering.Juan Zarate, the former deputy national security advisor for combating terrorism in the Bush administration, said that the Vinas case illustrated how difficult it was to follow young men who become radicalized and make their way to militant camps in Pakistan, as well as Afghanistan, Iraq and Somalia."I don't think the FBI or [CIA] would say that they've seen even a poorly organized or loose [U.S.] pipeline," Zarate said. "But I don't think anyone is fully confident that we have full visibility of all the potential pipelines or of radicalized individuals trying to make their way to fight."
"We're not worried about volume," Zarate added. "But all you need is a cell to inflict damage."..more...http://www.latimes.com/news/nationworld/nation/la-na-american-jihadi26-2009jul26,0,3960970.story