People are dying to tell you their secrets; it's just a matter of getting the conversation going in the right direction. If you just let people fill the silence, they will let you the most extraordinary things. I sometimes wonder if afterward they remember what they've said.
I cannot grasp the difference between killing people with drones or rifles and knives. The objective in war is to kill the enemy before he kills you. I can't fathom the almost religious zeal with which the use of drones is being opposed.
I've consciously tried not to romanticize anything, especially not intelligence work. I've always said that I've been writing a series of episodic, naturalistic novels. The people just happen to be spies, politicians, civil servants.