Today's editorial in the FT:
Turkey is watching its deepest fears become reality on its southern border. As Kurdish forces take control of towns across north-east Syria, Ankara faces the possibility of an autonomous Kurdish area emerging, in loose federation with adjacent Iraqi Kurdistan.
To the Turkish establishment, this is an existential threat: an embryonic Kurdish state is bound to embolden Turkey’s 13m-plus Kurdish population in demands for regional autonomy, and could try to claim chunks of Turkish territory. Worse, a powerful element in a new coalition of Syria’s Kurdish groups is the PYD – an ally of the rebel Kurdistan Workers Party (PKK), which has waged a 27-year struggle against the Turkish state. The PKK is now exploiting the situation, launching massed attacks, not the usual scattered raids, on army posts in Turkey’s south-east.
And there are reports that Assad is evacuating the Kurdish areas of Syria to give militants there a free rein.