The Black Widows is what Russian journalists call female Islamist suicide bombers who have participated in more than 30 attacks that have killed about 900 Russians in eight years. The Black Widows are the creation of notorious Chechen rebel military commander Shamil Basayev, the mastermind of the Beslan school massacre, a three day hostage taking in a school in North Ossetia that left 334 hostages dead. Basayev’s theory is that when the Russian authorities are on alert for potential terrorist attacks, a young woman in jeans, or an older woman in a frock, attracts less suspicion than a dark-skinned young Chechen man in a cheap jacket. Basayev dubbed his battalion of suicide seekers Riyad us Saliheen, an Arabic reference from the Koran meaning Garden of the Righteous. It was composed of men and women, but it was the women who fascinated the Russian media. There have been two more suicide bombings in Dagestan see:

Pray: that God’s righteousness would overcome all dishonourable plans to rule and oppress. (Ps.3:7)

More: http://www.cbc.ca/world/story/2010/03/30/f-russia-black-widow.html#ixzz0jkFhogeS