Black Widow

Of particular concern to Russian authorities at the Sochi Olympics are the "black widows," frequently young women whose husbands have been killed by Russian forces. Last month, Russian security forces published photographs of three such women allegedly planning to bomb the Olympic torch relay, and another of a 22-year-old woman called Ruzanna Ibragimova, who they said might be in the Sochi area.

How common are female suicide bombers?  What motivates them?

Are suicide bombers Crazy?