I understand people's suffering, people's pain, more than you will ever know yourself.
The deliberate and deadly attacks which were carried out yesterday against our country were more than acts of terror. They were acts of war.
The whole history of civilization is strewn with creeds and institutions which were invaluable at first, and deadly afterwards.
And so I think that if the person has the funds, the network, and the equipment to do this, and also the experience, which is the key factor, then they can be quite deadly.