Turkey’s stance on the Syrian civil war has grown complicated. There are Kurds in Syria, in Iraq, and in Turkey. Kurdish nationalism has threatened the territorial integrity of all three countries. If the Kurds can establish a Kurdish state in Syria and/or Iraq, then they will have a base for supporting rebellion by Kurds in Turkey. The civil war in Syria caused a collapse of authority by the Assad regime in many parts of the country. Since 2012, in the northern part of the country, along the border with Turkey, Syrian Kurds established their power in a number of enclaves. The first Kurdish troops joined up, at least in part, to oppose ISIS on its own demerits.
Then, in 2015, ISIS reared its ugly head as a threat to Iraq. The army of Iraq collapsed. Shi’ite militias, armed by Iran and led by Iranian generals, rose up to resist ISIS. The United States sought to counter two enemies—ISIS and Iran, which were themselves enemies—by mobilizing Kurdish troops against ISIS in both Iraq and Syria. The Americans tried to put a veneer of we’re-not-only-Kurds on this by recruiting some Arab fighters for what is called the Syrian Democratic Forces. This hasn’t fooled anyone.
By mid-2016, Kurdish forces seemed intent on linking-up several of their enclaves along the border with Turkey. In August 2016, the Turks launched a major attack on ISIS forces across the border to pre-empt a Kurdish conquest. As the ISIS caliphate began to crumble, it became a matter of time until the Turks, Kurds, and Americans would have to decide on next steps. In late January 2018, Turkey—an American ally in NATO—attacked Kurdish troops—American allies in Syria.
Meanwhile, Turkish-American relations have continued to sour. Recep Tayyip Erdogan has led Turkey since 2003. In July 2016, opponents of Erdogan tried to overthrow him in a coup. They missed their punch. Erdogan blames Fethullah Gulen for organizing the coup. Gulen lives in the United States and the U.S. refuses to extradite him to Turkey. In 2016, Erdogan began building links to Iran and Russia.
Sometimes, there aren’t good solutions to problems. If you wanted someone to fight ISIS and if you didn’t want it to be only Iran and its Iraqi clients, then either the Kurds or the Turks were going to have to do it. The Turks showed no interest in a major intervention. That left the Kurds, with all the baggage that choice would carry. Similarly, should the United States now choose Turkey or the Kurds? Erdogan seems bound away from a Western orientation. The Kurds have proved themselves valuable allies at a time when the Syrian civil war continues down an uncertain path. Perhaps there is a way to compose the differences between Turkey and the Kurds, at least over the longer term. Or perhaps not. Won’t know until we try.
 Sewell Chan, “What’s Behind Turkey’s Attack on American-Allied Kurds in Syria,” NYT, 23 January 2018.
 The Assad family allowed one Turkish Kurdish leader to operate from Syria for a long time.
 This is the same reason that Israel will never accept the creation of a Palestinian state. Doesn’t matter what commitments they may have made in earlier and different times. For that matter, this is the same reason that there isn’t a Confederate States of America. Before we start preaching to others.