ISTANBUL — Turkey’s plans to create a buffer zone in northern Syria after the United States withdraws its forces suffered a setback on Thursday, when Russia and Iran said at a summit that any such zone would require the approval of their ally, Damascus.
At their tripartite meeting in the Russian city of Sochi, President Recep Tayyip Erdogan and his Russian and Iranian counterparts welcomed President Donald Trump’s decision to pull out American troops fighting the Islamic State (IS) in Syria, with Vladimir Putin calling it “a positive step.”