"On 1 February, at about 11 p.m. Moscow time [20:00 GMT], Russian Hmeimim airbase airspace control means discovered unmanned aerial vehicles launched from an area of the Idlib de-escalation zone under the control of illegal armed units. Means of electronic warfare of the airbase intercepting and disabled all UAVs by disrupting their control systems", the message read.
No casualties and damage have been registered at the base after the attack, and the base is currently operating in a normal mode.
In January, the Syrian army started an offensive in the west of Aleppo over militants' daily shelling of the city's residential areas.
Moscow started its counterterrorism operation in Syria on 30 September 2015 at the request of Damascus. Russia is also a guarantor of the Syrian ceasefire along with Turkey and Iran.