Skepticism, Science & Pseudoscience

- They have relocated their families from Raqqa, Syria, (which is currently regularly being bombed) to IIRC Mosul, Iraq. Which means, they regard the russian bombings as a serious threat. IMO, this is also part of a long-term plan to evacuate Raqqa if need be.

- A significant part of their budget comes from taxing locals... and those people are fleeing.

- Any technologically modern society needs specialists like doctors and engineers to run... and those people are also fleeing from ISIS. And the recruits ISIS gets don't have the skills they want.

- ISIS is living in a religious fairy-tale world where they first conquer the Middle-East, then the army of Satan ("Rome" aka the West) challenges them to an end-times battle, which ISIS wins and then Happy End. Right now, they have troubles with point 1 of their plan: Conquering the Middle-East, which disputes their divine claims on a religious level...