https://www.offiziere.ch/?p=33591

On the night of 5-6 January 2018, a new chapter in asymmetric warfare may have opened in Syria. A Russian Air Force detachment at Khmeimim Air Base and at the Tartus Naval station came under attack from a swarm of drones.

Up to 13 drones were used for these two attacks making it an unprecedented use of drone airpower by a non-state actor. The drones were guided by using GPS and could have been launched from up to 100 km

http://syria.mil.ru/en/index/syria/news/more.htm?id=12157872@egNews