Scud missiles

The Syrian government signaled today its patience is exhausted with repeated Israeli airstrikes on its territory.
Syria said it would launch Scud missiles at Israeli targets the next time Israeli jets infringe its sovereignty, as reported by Sputnik:

Russian air defense system missile system Antey 2500, or S-300 VM, is on display at the opening of the MAKS Air Show in Zhukovsky outside Moscow, Russia. The Russian military has deployed the S-300 air defense missile systems to Syria to protect a Russian navy facility in the Syrian port of Tartus and Russian navy ships in the area.