"Thus, it would openly violate the corresponding UN Security Council resolution [2254], undermine the efforts of the International Syria Support Group, further inciting the hotbed of war on the territory of Syria, in the immediate vicinity of the CSTO's zone of responsibility," CSTO Secretary General Nikolai Bordyuzha told reporters.
The UN Security Council Resolution 2254, passed in December, reaffirms the goals of previous agreements to end the bombardment of civilians in Syria, bring the entire spectrum of political groups in the crisis-torn country to the negotiating table and promote a lasting political resolution of the crisis.
The Russian Defense Ministry has previously said that it has "serious grounds" to suspect Turkey of preparing for a military incursion in Syria.