7. S-400 missile

In November 2015, the deployment of S-400 was reported in Syria, along with the contingent of Russian troops and other military hardware in the course of the air campaign conducted by the Russian forces. The S-400 is the most advanced anti-aircraft defense system in Russia, and is unparalleled in the world. It’s designed to ensure air defense using long- and medium-range missiles that can hit aerial targets, including tactical and strategic aircraft as well as ballistic and cruise missiles, at ranges of up to 400 kilometers.