It's a question of confidence and time.

It's a question of confidence and time. I must stress though that in terms of intelligence cooperation, in terms of operational impact on the enemy, Libya is a good partner.

When you look at all instruments of statecraft and how that's pulled together, I think the ambassadors are uniquely poised.

However, Libya has made enormous progress in the last couple of years and we are hopeful that at some point we can address that question.

But despite this shared perception of the threat, there is disagreement over the most effective means to counter the threat. Some European countries continue to argue that terrorism is merely -- or mainly -- a criminal problem.

It is now well known that the terrorist cell that conducted the 9/11 attacks did much of its planning from a base in Europe.