Key Facts
- Duration
- May–July 2017 (primary phase)
- Key objective
- Capture al-Tanf border crossing and Damascus-Iraq highway
- US weapons deployed
- HIMARS multiple rocket launchers introduced June 2017
- US/UK facility
- Al Tanf Garrison staffed by US and UK special operations forces
- Secondary operation
- Operation Grand Dawn targeting ISIL along Damascus-Palmyra highway
Strategic Narrative Overview
The Syrian Army launched large-scale operations in May 2017 along the Damascus-Iraq highway, aiming to seize al-Tanf and secure the Damascus countryside. The US reinforced and expanded the al-Tanf garrison with advanced weaponry including HIMARS systems. On several occasions, US forces conducted what they described as self-defense strikes against advancing pro-government troops and militia. A separate front, Operation Grand Dawn, was opened to reopen the Damascus-Palmyra highway and set conditions for an offensive toward Deir ez-Zor.
01 / The Origins
During the Syrian Civil War, the Syrian government sought to consolidate control over the vast Syrian Desert, particularly the strategic highway linking Damascus to the Iraqi border. The al-Tanf border crossing became a flashpoint, as the United States and United Kingdom operated a training garrison there, advising the rebel Revolutionary Commando Army. Control of these corridors carried major geopolitical weight for both the Syrian-Iranian axis and Western-backed forces.
03 / The Outcome
The campaign did not result in Syrian government capture of al-Tanf, which remained under US and allied control. The operation nonetheless allowed Syrian forces to make inroads across the desert, reopening key highway segments and positioning for subsequent offensives toward Deir ez-Zor. The US military presence at al-Tanf created a lasting point of friction between coalition and pro-government forces in the region.
Belligerents & Mobilization Analysis
Side A
2 belligerents
Side B
3 belligerents
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.