Despite increasingly frantic calls - especially after the London bombings of July 7, 2005 - for western leaders to 'understand Islam better', there is a still a critical distinction that needs to be made between 'Islam' as religion and 'Islamism' in the sense of militant mindset. As the author of this provocative new book sees it, it is not a more nuanced understanding of Islam that will help the western powers defeat the jihadi threat, but rather...