One of the Kurdish groups was a Taliban-like movement that included scores of Afghan war veterans and called itself Ansar al-Islam, or “Helpers of Islam.” Its leaders were Sunni Muslim extremists who quickly imposed harsh Sharia law in the villages they controlled. They banned music in all forms, forced women to cover their faces in public, and outlawed schools for girls. They also developed a fondness for experimenting with poisons, building a crude lab in which they exposed stray dogs to cyanide and homemade ricin.