When Turkish F-16 fighter jets shot down a Russian warplane at the Turkish-Syrian border, it swung the spotlight back on the strategic region, long a focal point of conflict in the Syrian crisis.
It also focused attention on Turkey's relationship with the Syrian rebel factions fighting to wrest control of the country from President Bashar Assad.
The Russian Su-24 bomber was shot down last week. Turkey said it had entered its airspace while on a mission to target Syria's Turkmens, an ethnic minority with deep ancestral and linguistic ties to Turkey. The Kremlin insisted that the plane was over Syria, not Turkey.
Based in the region straddling Turkey's Hatay province and...