The question about the transfer of S-300 systems to Syria remains “mostly political” and has been practically resolved. Components of S-300 systems, including radar stations, transport vehicles, command posts and missile launchers, will be delivered to Syria by military transport aircraft or vessels of the Russian Navy. It is possible that Russia will deliver the systems that have already been used in the Russian Armed Forces.
On April 14, the Western coalition fired 103 missiles on Syria, but Syrian air defence forces shot down
Source (Pravda)