The book discusses how the Wahhabi movement made it possible to justify the shedding of blood of those who did not adhere to its brand of Islamic purit .
The Wahhabi movement vilified Sunni and Shia Muslims , exacerbating divisions and causing throughout Asia and Europe .
The book discusses how the Wahhabi movement made it possible to justify the shedding of blood of those who did not adhere to movement 's brand of Islamic purit .
The Wahhabi movement vilified Sunni and Shia Muslims , exacerbating divisions and causing throughout Asia and Europe .