It's a mammoth task. We don't have the resources in terms of our treasury departments, we don't have financial investigators who even think in a crafty, cunning way.

It's not a question of either/or. There are certain elements of either strand of thought that have merit, and it can hinder finding the right response to dwell on the differences.

Pure TNT is extraordinarily dangerous and may be linked towards trying to circumvent the process of making a nuclear device.

Every single terrorist event we've had, and the failed ones we've had, there usually are foreign connections, even though the cannon fodder may be home grown.

Even the best guide you can ever have is the visual imagery on how you mix these things together,

There hasn't been any situation like we saw recently with the Greek case where you were so close to taking this decision,

I don't think anyone ever fathomed, even in the intelligence community, how sophisticated their training was, how well-prepared they were and how they were working away secretly in imparting this advice.

I would doubt very much whoever did it had a terror link. Normally, they don't go for high-risk ventures with massive amounts of law enforcement focus.

New converts feel they have to prove themselves. Those who seek more extreme ways of proving themselves can become extraordinarily easy prey to manipulation.

There are few bin Laden can trust, in terms of family, just to reinforce loyalty, it creates intricate web that can insulate any defections,