Hundreds of Syrian Army troops have been entirely besieged in their bastion on Deir Ezzor since the Islamic State completely cut off all roads leading to the eastern province in May 2015.
In September 2016, the US-coalition warplanes conducted lethal airstrikes against the Syrian Army troops stationed in the strategic Thardeh Mountains.
The aerial bombardment killed and injured dozens of government soldiers, thus paving the way for the jihadi group to take over the Mountains which directly overlook the city’s Airbase.
A few months later, ISIS jihadists were capable of splitting up the government-controlled areas, imposing yet another siege on the airfield.
However, the Syrian Army – backed by allied forces and Russian airstrikes – managed to break the stifling blockade by advancing toward the 137 Brigade and then heading south to secure the way to the Airbase and eventually imposing full control over Thardeh Mountains.
This remarkable achievement will pop up the government forces to drive out ISIS from the areas it controls in the oil-rich province.