The US and Jordanian militaries may be prepping a massive invasion of Syria, intelligence reports gathered from surveillance drones suggest.

Damascus is reportedly on high alert after some 400 American and Jordanian military vehicles were located at a Jordanian military base near the Syrian desert border earlier today.

More pictures of the drone surveillance here:

The foreign convoys may launch an incursion to aid allied Free Syrian Army (FSA) proxies based around the Al-Tanf border crossing.

In 2017 alone, FSA satellite forces have entered Sweida and Deir Ezzor while also coming dangerously near Palmyra and Damascus, areas under Syrian Arab Army (SAA) control.

In response to the looming invasion, the SAA has begun a large-scale offensive along the Damascus-Baghdad highway in a bid to dislodge FSA rebels from the Al-Tanf border crossing are link up with friendly Iraqi border guards.

The photos validate previous reports by an Al-Masdar News military source suggesting a major Jordanian and US buildup at the Syrian border.

UPDATE: The military base is located east of Az-Zarqa, 43 km away from the Syrian border. The tanks are supposedly M60 types.