All wonderful news, but I'm extremely skeptical that they can be defeated in any conventional manner. Not because they're using cheat codes, but because in many ways they're nomadic anyway. They'd lose in power, but their supporters have spread all the way to North-Africa by now.
Ironically we have been having such successes against IS because we are fighting a more conventional war with them. They have bases, territory to be retaken and commanders and positions with intel to take. Their desire to create an actual nation under their rule made them weak to all of the problems a nation at war has. And they have none of the strengths of an actual nation, no allies, no real supply lines no bargaining chips aside from oil. (and we have been bombing all of their oil trucks into oblivion).
But yeah. We are defeating the real beast of IS, but like before once that is done, they will simply spread out like cancer cells and have to be destroyed at the Cell level, causing the same problems as AQ and the Taliban.
Its almost fascinating in a way when you think about it. They really could be compared to a weaker cancer. The main body (everyone else) is too strong and determined to ever let the cancer spread to such a level to do true damage. While the Insurgents (the cancer) are dug in so deep and spread out that its almost unrealistic to think we will ever kill every single one to the point their organization is dead.
Its like being stuck in limbo, neither side is really going to win. Its like fighting Organized Crime groups. (Mafia, Triad,Yakuza,Cartel) you cannot beat them but you can hurt them enough that they wont be a danger to the average civilian going about their day.
Wow that was longer than I intended @3@