I think ISIL as a viable organisation is failing - and picking targets of desperation - maximum horror publicity to convince the west to leave. And I will remind everybody that Saudi Arabia and its extended royal family clan is a front for Wahabbism - an extremist form of Islam. Given a satiation level of surplus petro dollars no doubt some are funneled into the likes of ISIL by channels beyond any ME state control.  I find the cosy relationship between the USA and Saudis troubling to say the least - remember 9/11 .....

I have been in the ME ( busines ) - and the culture gap with the west makes the Grand Canyon look like a dried-up mud crack.