“…Lewis, ). However, both of these assumptions have been effectively challenged (Haddad, ; Jung, ; Matin, ; Matin, ; Matin, ; Phillips, ; Ruthven, ). Analytically, most existing accounts variously concentrate on IS's immediate origins in the aftermath of the 2003 Iraq war (Al‐Tamimi, ; Hashim, ), its salafi (fundamentalist) doctrine (Al‐Ibrahim, ), religious zeal (Wood, ), organisational structure (Acun, ; Hashim, ), military tactics (Katagiri, ), revenue sources (Kan, : 15; Tripp, ), hyper‐recruitment of foreign fighters (Al‐Ubaydi, ; Basit, ), or necessary measures for defeating the movement (Cordesman, ; McCants, ), or a combination of two or more of these aspects (Fromson and Simon, ).…”