The five times the Turks summonsed the Russian Ambassador and lodged an official complaint.
so?! it doesn't mean they were right any of those five times (though they possibly were couple of times), because of aforementioned exclusion zone Russians obviously didn't agree with
A 10 mile exclusion zone was mentioned as normal to avoid incidents, the Russians obviously were not the slightest bit concerned about the consequences.
they should set the exclusion zone in their own airspace, what right they have to tell the other country what to do with its airspace?! Syria has legitimate government which summoned Russians to help them, Russia has all the right to fly wherever they want in syrian airspace, other countries not so much.
Turks could have sent (I assume on guard) what the Russians didn't want to hear.
do you seriously believe Russians would go to provoke them with a practically defenseless bomber (even anti-IR pods were not present)?!