What happened is that Turkey in collaboration with Saudi Arabia support and protect terrorists instead of coordinating with the southern neighbor in fighting terrorism. That led to direct intervention from Russia, the Syrian strategic ally in the region, with the help of Iranian advisors to eradicate terrorists. When turkey shot down the Russian fighter-jet, that represented a turning point, however, in the Syrian scene.
Erdogan thought, by shooting down the Russian plane, NATO will stand and support turkey. But Political and economic conditions barred European Union from standing with Turkey. After several months, Erdogan has, in an official letter, to apologize to the Russian president, Vladmir Putin.
Of course, Erdogan after facing internal political problems, he was forced to change his policy towards Russia and Syria. The request of apology from Russia is in the interest of the Syrian ally. Will Syria, in the future, be satisfied with a mere apology from Turkey?
Any way, Turkish orientation now indicates that the front of Syrian enemies started to crumble and one political player left the scene for Saudi Arabia to face alone. That is exactly what happened in the coalition of aggression against Yemen, where Morocco and Unied Arab Emirates withdrew leaving Saudi Arabia alone in Yemen and alone in Syria as well. Perhaps, the day is soon coming when Saudi Arabia itself will request apology.
Terrorists use mosques for military actions
A lot of anti-Syrian government media accused the Syrian army of shelling hospitals and mosques used by terrorists. Hostile media and and sites publishing for terrorists aim to deviate thinking of the public.
In fact, terrorist groups like Nusra Front and others deliberately hide in mosques with military equipments and from there target Syrian planes. The following video footage imaging represents a model of targeting Syrian army from mosques that was disseminated by militants and has been a scandal for them.