[philh]

> If that was true all Muslims would support ISIS but they don't.

Different people react to things differently, interpret things differently, take ideas more or less seriously, and so on.

I think the reasoning: "if ISIS was about religion, then all muslims would support ISIS", would approximately equally support: "if ISIS was about foreign policy, then all Iraqis would support ISIS".

I don't think either of those if-thens holds as an if-then, regardless of the truth value of the "if" part.