Turkey could cut off Islamic State’s supply lines. So why doesn’t it?

David Graeber in The Guardian:

In the wake of the murderous attacks in Paris, we can expect western heads of state to do what they always do in such circumstances: declare total and unremitting war on those who brought it about. They don’t actually mean it. They’ve had the means to uproot and destroy Islamic State within their hands for over a year now. They’ve simply refused to make use of it. In fact, as the world watched leaders making statements of implacable resolve at the G20 summit in Antalaya, these same leaders are hobnobbing with Turkey’s president Recep Tayyip Erdoğan, a man whose tacit political, economic, and even military support contributed to Isis’s ability to perpetrate the atrocities in Paris, not to mention an endless stream of atrocities inside the Middle East.

How could Isis be eliminated? In the region, everyone knows. All it would really take would be to unleash the largely Kurdish forces of the YPG (Democratic Union party) in Syria, and PKK (Kurdistan Workers’ party) guerillas in Iraq and Turkey. These are, currently, the main forces actually fighting Isis on the ground. They have proved extraordinarily militarily effective and oppose every aspect of Isis’s reactionary ideology.

But instead, YPG-controlled territory in Syria finds itself placed under a total embargo by Turkey, and PKK forces are under continual bombardment by the Turkish air force. Not only has Erdoğan done almost everything he can to cripple the forces actually fighting Isis; there is considerable evidence that his government has been at least tacitly aiding Isis itself.

More here.