Their barbarism will stand as their shame for all eternity.

I think what happened with 9/11 is that people sort of felt that it came from nowhere. Whereas I think now we understand the roots are very deep. I say it's like revolutionary Communism, something that is going to have to be knocked out over a very long period of time. This strain of extremism continues to be very strong, whether it's in Afghanistan, or Somalia or Yemen, or any of these places.

We in a sense went for the Bernie Sanders model OK? Now we're also in turmoil as a result of this result.

Today the impulse towards interdependence is immeasurably greater. We are witnessing the beginnings of a new doctrine of international community.

But the world is ever more interdependent. Stock markets and economies rise and fall together. Confidence is the key to prosperity. Insecurity spreads like contagion. So people crave stability and order.

What the commission that myself and Leon Panetta is trying to do is analyze this in two respects. First of all, what's the right military response and security response?

We know the problems, and we know the solution: sustainable development. The issue is the political will.