Defense ministry reported about drone attack on airbase in Syria. 13 UAVs armed with explosives were launched from territory controlled by Turkish-backed rebels. 6 or 7 were shot down by air defenses, others were jammed and landed using radio-electronic countermeasures.
https://www.rt.com/news/415454-drone-attack-syria-turkey/
Earlier in December, the base came under mortar fire, probably from infiltrated rebels squad. Two servicemen were killed, few planes damaged.