The war we are fighting today against terrorism is a multifaceted fight. We have to use every tool in our toolkit to wage this war - diplomacy, finance, intelligence, law enforcement, and of course, military power - and we are developing new tools as we go along.

I'd have described myself as a Tolkien reader before this, but now I'd describe myself as a Tolkien geek.

I'm not interested in building wealth, which is kind of naive and probably frowned on, living in America. It's something that people don't necessarily understand, but if I die poor, I die poor.

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 don't know if, at the end of the day, how brave Saddam Hussein would be if he were stripped of his bodyguards and everything else.

The CIA estimates that Iraq probably has a few hundred metric tons of chemical weapons agents, for mustard gas, sarin, and other deadly concoctions. This is addition to an extensive capacity to produce biological weapons, including anthrax and ricin, which is fatal within 24 to 36 hours of exposure.

I think insanity is the hardest thing to play.