The role of the Muslim Brotherhood in the rise of Islamist terrorism: At-Tali`ah Al-Muqatilah (the Fighting Vanguard)

I remember Hanna Batatu was very interested in At-Tali`ah Al-Muqatilah in his study of Syria. He believed that the sectarian nature of their violence helped the regime.  This article talks about the role of At-Tali`ah and the Muslim Brotherhood in general in the rise of Islamist terrorism.