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.

Acts perpetrated by women, particularly attractive women, get far more media attention.

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

The terrorists provide an outlet where with just one action, a raped woman can go from being a source of dishonour to her family to being a source of pride in a culture of martyrdom.

I did a study of soldiers returning from Iraq, and their levels of PTSD were much higher if they had had to shoot a woman or child, even if they knew the person was a suicide bomber.

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.