By Michael Land (ISW Syria Team) and Nada Atieh (Syria Direct)
The following Syria Situation Report (SITREP) Map summarizes significant developments in the war in Syria during the period December 4 - 17, 2019. Key SITREP events include an expansion of the anti-Bashar al-Assad regime insurgency in Southern Syria, joint Assad regime-Russia airstrikes in Idlib Province, and Russia-Turkey cooperation in reopening a section of the M4 Highway in Northern Syria.