It's cheap, and you have a thinking, breathing bomb that can adjust to circumstances and cross the street to hit another target if the original one doesn't look good.

A lot of movements use women's involvement to shame men when recruitment is sagging.

When I was in Sri Lanka with the [Tamil] Tigers, there were editorials in the paper saying that soldiers really had to stop raping Tamil women at checkpoints because they were just creating more operatives. The [Tigers] were cognizant of this and exploited it: "Don't be a victim, join the movement.

When the bombers are women - and children, which I predict we'll see more of - the terrorists get more bang for their buck, because there's more media attention.

Misuse of the Koran to provide legitimacy for violence is common, particularly in Europe, where terrorists tend not to be well-educated Muslims.

It's cheap, and you have a thinking, breathing bomb that can adjust to circumstances and cross the street to hit another target if the original one doesn't look good.

Women are secretaries of state and prime ministers - but people still don't expect women to be involved in violence.