http://www.newsmax.com/TheWire/failed-states-syria-iraq/2015/09/11/id/687220/Iraq and Syria may have been permanently torn apart by war and sectarian tensions, the head of the Defense Intelligence Agency said on Thursday, and many in those countries no longer identify as Iraqis or Syrians, agreed the head of the CIA.
I really don't see why it would be a bad thing to break them up. Maybe there would be some underlying problems I haven't considered but I know the Kurds would much prefer their own state so they can rule themselves.
What bugs me is if they have been lying on intelligence reports about how effective we have been against ISIS. Things may be worse than we know.