Russian Su-30 tactical fighter jets  spotted in northern Syria over
Hemimim airbase in Latakia.

Russia has moved jet fighters to a base in Syria for the first time, U.S. defense officials said Friday, a major military escalation that heightens fears Moscow is set to play a more direct role in propping up Syrian President Bashar al-Assad.

Russia’s recent movements near Syria’s city of Latakia suggest that Moscow plans to establish a “forward air operating base” there, the US has said.

Pentagon spokesman Jeff Davis said there had been a steady flow of people and equipment in the coastal area.

Russia says military equipment is being sent to Syria to help the government combat the so-called Islamic State.

Moscow has been a key ally of President Assad during Syria’s bloody civil war, which began in 2011.

Earlier it was reported Russia supplied BTR-82A Armoured Personnel and all-terrain infantry mobility vehicle «Tiger» in Syria, Russian fighter was seen flying over Western Syria