The development of weapons of mass destruction and the missiles to carry them would be a very destabilizing effect, should Iran be able to accomplish that.

I think insanity is the hardest thing to play.

You can have your beliefs, but if you're not devout, you can't quite believe that something which grows out of a story, a book or a piece of literature can rise to dominate and make entire nations go to war with each other. I think that's endlessly fascinating, and it's a human construct. It's something that's constructed to occupy the mind and occupy society, and some people would say to control society.

I'm the only honest person in Washington.

I did mega-training with ex-military men. I'd be in the gym for two hours after a 12-hour day on Spooks, and it was so hardcore I'd throw up. I stuffed myself with food and drank protein shakes to bulk up. I used to be a dancer, but I had to strap my weak ankles every day and strengthen my wrists so I could hold a machine gun. My body just wasn't up to it.

I think understanding or comprehension is probably the strongest emotion that you feel, or at least some kind of empathy.

I have an accountant, obviously, because I'm self employed, and I use an independent financial adviser. I trust my accountant because we have worked together for a long time now.