12 January 2018. On January 12, the Tiger Forces, the Syrian Arab Army and other pro-government factions continued their operation against Hayat Tahrir al-Sham (formerly Jabhat al-Nusra, the Syrian branch of al-Qaeda) in the area of the Abu al-Duhur Airbase. Following the previous failed attempts to capture the airbase, government forces changed the strategy and started an operation in order to isolate the base from the rest of the militant-held area.

SOUTH FRONT

https://southfront.org/tiger-forces-isolating-abu-al-duhur-airbase-from-eastern-flank-map

At industryabout.com:

Abu al-Duhur Airport (OS57)

Syria and Iraq War Industrial Map