"The shooting at the Kilis camp led Turkish authorities to summon the Syrian ambassador in Ankara, the capital, to demand an end to clashes at the border area.
A Turkish Foreign Ministry official speaking on the condition of anonymity denied that Turkey has sent reinforcement to the area. However, he said “everything is on the table” when asked if the shooting will affect Turkey's involvement in the conflict, including steps to create a buffer zone along the border or to allow weapons to go to the rebels." LA Times
The process of creeping along in "baby steps" towards active intervantion in Syria continues. The US has already declared regime change to be the goal in Syria. Turkey is "on board" for that. Saudi Arabia and Qatar are providing money for the effort. All the talk of "agreements" is just a ruse.
Bashar Assad knows that if he makes an agreement with the Sunni insurgents he gives them legitimacy far beyond the description of them as "armed gangs" that his government has insisted on until now. Down that road lies his fall from power, trial, an iron barred cell and the end of everything for him.
Syria has a large population that will not accept Sunni Triumphalism. The country will have to be occupied for quite a while to make that "stick." The US will not occupy Syria. The Arab states lack the capability.
Turkey is the only possibility. The Ottoman past is still a factor but only one factor. pl