Vladimir Putin has said he hopes nuclear warheads will not be needed to deal with terrorists, after Russia launched cruise missiles from its submarine at Syria.

During a meeting in the Kremlin, Russia's Defence Minister Sergei Shoigu told the President that Kalibr cruise missiles had been fired by the submerged Rostov-on-Don submarine from the Mediterranean Sea for the first time.

He said TU-22 bombers also took part in the latest raids and that "significant damage" had been done to a munitions depot, a factory manufacturing mortar rounds and oil facilities. Two major targets in Raqqa, the defacto capital of Isis, had been hit, said Mr Shoigu.

President Putin said the new cruise missiles could also be equipped with nuclear warheads - but that he hoped they would never need them.