Russia has already started delivering the S-300 surface-to-air missile defense system to Syria, Russian Foreign Minister Sergey Lavrov said on September 28.
“The delivery has been started already. And as President Putin said, after that incident […] the measures which we will take will be devoted to ensure 100 percent safety and security of our men in Syria,” Lavrov said at a press conference following his speech at the UN General Assembly in New York on September 28.
By “incident”, the diplomat meant the recent shootdown of a Russian IL-20 plane off the Syrian coast. The plane was targeted by Syrian air defense fire. However, according to Russia, the incident was triggered by “hostile” Israeli actions.