Taking the ground and holding the ground are two different things. It looks like they don’t have a plan for holding it. Ooops.
The Peshmerga are coming.
I read whilst they were on defensive last several wks, they’re now attacking. Thats good. Any plan shouldn’t be publicized of course. But, there are couple of Islamist iraqi kurds who are fighting with IS. originally from Halabja in iraq though been in Syria for a while & know the terrain, mentality, and language of other Kurds. Whereas Pesh are unfamiliar with this new environment. That’s an advantage for IS. Plus Kurds still need heavy weapons or generally more weapons & ammo.