One of the things that ultimately led me to leave mathematics and go into political science was thinking I could prevent nuclear war.

It's a very bad thing when people exterminate other people, and people persecute minorities.

For one thing I tend not to see myself in various moulds that people fit me into.

People change their habits. I know Americans who don't go to Paris because they think it is too dangerous.

I think one has to say it's not just simply a matter of capturing people and holding them accountable, but removing the sanctuaries, removing the support systems...

Iraq has no history of ethnic conflict.

I think it's a mistake to rely too much on any one economic factor. It's why investors try to spread their portfolio round.