Russia recently announced the completion of the delivery of S-300 air defence systems to Syria. Shortly after this statement, the Israeli-based iSi company published photographs of the areas where the first S-300 units were deployed.

According to the company, the system is located in previously operating air-defence base at the northwest of the town of Masyaf that. On October 22, there are large vehicles hidden under camouflage nets at captured images. On October 24, four S-300 TEL (Transport Erector Launcher) was seem. Again, iSi'dan said that the system does not come operational.