MOSCOW (Sputnik) — S-300 (NATO reporting name SA-21 Growler) is a missile defense system designed to fire surface-to-air missiles at aerial targets such as helicopters, warplanes and cruise or ballistic missiles.
"No, it is not," Alexander Fomin told reporters, answering a question on whether work was being carried out to revive the contract.
Russia and Syria signed a $1.1 billion deal on the supply of four S-300 systems in 2011, before the uprising in Syria led to a civil war in March that year.
Russian President Vladimir Putin confirmed in June 2013 that the S-300 system deal had been signed with Syria, stressing that the weapons stood undelivered so as not to disrupt the balance of powers on the ground.
© SputnikThe S-300-P surface-to-air missile system

The S-300-P surface-to-air missile system
© Sputnik