Intensifying attacks in Syria Russia carried out 33 airstrikes at militant positions in Syria's northern province of Aleppo near the Turkish borders, the media reported on Thursday.

The strikes, conducted late Wednesday, targeted rebels in the border town of Azaz near Turkey, said the report, adding that guided missiles were used on militant positions in several areas north of Aleppo, Xinhua reported.

A weapons shipment coming from the Turkish borders to the Ahrar al-Sham Movement and the Nusra Front in northern Aleppo was also struck, the report said.

It added that Syrian and Russian rocket launchers also fired on militant positions near the Turkish borders.

Russia has also deployed a sophisticated S-400 missile system at the Hmeimim airbase of the Russian air force operating in Syria, Russia's RIA Novosti news agency reported on Thursday.

The S-400 Triumf, a new generation anti-aircraft missile system, is capable of hitting an airborne target at a distance of up to 400 km with medium- and long-range missiles.

Russian Defence Minister Sergei Shoigu said on Wednesday that President Vladimir Putin ordered the deployment in order to raise its air defence capability following the downing of a Russian Su-24 warplane by Turkey on Tuesday, which the Kremlin said has dealt a "devastating" blow to bilateral ties.