Amazing thing about Iranian and Indian news and claims is that one must believe them with closed eyes.... because no one has ever seen, what they both claim and blame, actually it's always these two or either Americans in the middle of every thick, while rest of the world will never had a chance of any verification.
Now the only flaw with your claim is that... you are asking me to believe, that besides conducting a full blown war, with all of the world super powers, Isis was operating oil refineries.... it may all seem believable to those 99% of naive, who had never seen a refinery, or even a small processing industry, be it a milk packing plant.
Rubbish as always.... so where did all the mighty Isis evaporated?
When allies in Iraq can find Saddam's hideout, how come all of Isis supply lines were intact, while being surrounded by allies.. including IRGC?
Why their electricity wasn't cut... which is an elementary step after making a security cordon. Where did all of US drones disappeared who were months ago killing civilians in Iraq along side death brigades of IRGC?
To any person with common sense, Isis drama was a mutual creation of axis of evil, who occupied those lands, where Isis operated with impunity.
Go tell the almighty Isis to cross the fence erected by worlds greatest army, so that we also got the chance to test their metal!
This time their supply lines will be all open from direction Iran and US bases in Afghanistan, and they should be all strong...No?