have a clue about who this guy was until 1996 when they set up a unit to really start tracking him." Jason Burke also wrote: Broader influence Anders Behring Breivik, the perpetrator of the 2011 Norway attacks, was inspired by al-Qaeda, calling it "the most successful revolutionary movement in the world." While admitting different aims, he sought to "create a European version of Al-Qaida." The appropriate response to offshoots is a subject of debate. A journalist reported in 2012 that a senior US military planner had asked: "Should we resort to drones and Special Operations raids every time some group raises the black banner of al Qaeda? How long can we continue to chase offshoots of offshoots around the world?" Criticism Islamic extremism dates back to the early history of Islam with the emergence of the Kharijites in the 7th century CE. From their essentially political position, the Kharijites developed extreme doctrines that set them apart from both mainstream Sunni and Shiʿa Muslims. The original schism between Kharijites, Sunnis, and Shiʿas among Muslims was disputed over the political and religious succession to the guidance of the Muslim community (Ummah) after the death of the Islamic prophet Muhammad. Shiʿas believe Ali ibn Abi Talib is the true successor to Muhammad, while Sunnis consider Abu Bakr to hold that position. The Kharijites broke away from both the Shiʿas and the Sunnis during the First Fitna (the first Islamic Civil War); they were particularly noted for adopting a radical approach to takfīr (excommunication), whereby they declared both Sunni and Shiʿa Muslims to be either infidels (kuffār) or false Muslims (munāfiḳūn), and therefore deemed them worthy of death for their perceived apostasy (ridda). According to a number of sources, a "wave of revulsion" has been expressed against Al-Qaeda and its affiliates by "religious scholars, former fighters and militants" who are alarmed by Al-Qaeda's takfir and its killing of Muslims in Muslim countries, especially in Iraq. Noman Benotman, a former militant member of the Libyan Islamic Fighting Group (LIFG), went public with an open letter of criticism to Ayman al-Zawahiri in November 2007, after persuading the imprisoned senior leaders of his former group to enter into peace negotiations with the Libyan regime. While Ayman al-Zawahiri announced the affiliation of the group with Al-Qaeda in November 2007, the Libyan government released 90 members of the group from prison several months after "they were said to have