‘IS … is neither typical nor mired in the distant past, because its roots are in Wahhabism, a form of Islam practised in Saudi Arabia that developed only in the 18th century. In July 2013, the European Parliament identified Wahhabism as the main source of global terrorism, and yet the Grand Mufti of Saudi Arabia, condemning IS in the strongest terms, has insisted that “the ideas of extremism, radicalism and terrorism do not belong to Islam in any way”.
Other members of the Saudi ruling class, however, look more kindly on the movement, applauding its staunch opposition to Shiaism and for its Salafi piety, its adherence to the original practices of Islam. This inconsistency is a salutary reminder of the impossibility of making accurate generalisations about any religious tradition. In its short history, Wahhabism has developed at least two distinct forms, each of which has a wholly different take on violence.’