Do Iraq and Syria no longer really exist? And if so, should that be the basis of revising U.S. policy? A roundup (1): Yes
Yes, on Syria; not clear on Iraq
Joel Rayburn, author of Iraq after America: Strongmen, Sectarians, Resistance:
"Syria no longer exists, certainly not in the way that we have known it, and I think the Syrian state can never be reconstituted within its old borders. In other words, some new political arrangement is going to emerge in Syria, and in my opinion it is highly unlikely to be a unitary state.