On December 6, the Syrian Arab Army (SAA), Hezbollah and their allies establsihed a full control over the highway between the Syrian cities of al-Bukamal and Deir Ezzor. Thus, the SAA and Iranian-backed forces just officially established a major land route between Lebanon and Iran.
The United States and Israel had been fearing for a long time that such a route may be used by Iran to provide supplies to Hezbollah in Lebanon and to the SAA in Syria. Now, this road is the reality.