As Mr Assad’s forces continue to slaughter innocent civilians, many in Syria and beyond are hoping that Turkey will ride to the rescue. But the Turks would do this only as part of a coalition of the willing. With a presidential election looming, America has little interest in foreign adventures. NATO is unlikely to intervene. So what would happen if a massacre took place? Would Turkey send troops over the border? And how might Iran respond? Mr Davutoglu has no ready answers. What is certain is that he will have many more sleepless nights.