Several convoys containing a number of American Stryker APCs has been spotted driving from the eastern side of the Euphrates river in northern Syria and entering the Kurdish held city of Manbij. The vehicles were armed with a a 12.7 and 7.62mm machine guns, and bear clear unit markings. The Strykers were clearly identifiable as American due to the large American flags shown flying high over the several of the vehicles. Also shown are HMMWVs bracketing the convoys from the front and rear.
— Joseph Dempsey (@JosephHDempsey) March 4, 2017
This is a big leap for American involvement in the Syrian conflict. While there have been Special Operations Forces (SOF) in Syria prior to this deployment, they kept a low profile and moved around in non-standard vehicles. The forces now in Manbij are not only using standard American equipment, but the equipment itself is also clearly marked with American flags and unit markings that overtly signal an American presence .
The reason for this deployment was made apparent shortly after first pictures emerged, with the U.S has announcing that it is increasing it’s presence in Manbij to “deter hostile acts, enhance governance & ensure there’s no persistent YPG presence.” In other words, the troops are meant to assure the Turks that there are no YPG units operating with the Syrian Democratic Forces west of the Euphrates. Implicitly (and more importantly) ,the troops are also meant to deter Turkey from taking further action against the America’s partners in Syria.
— aris roussinos (@arisroussinos) March 5, 2017
As Turkey has expanded it’s zones of control it has attacked both ISIS and the Syrian Kurds, viewing them both as a threat to Turkish security. Recently, Erdogen vowed to take Manbij after the capture of Al-Bab was completed. With clashes ongoing around the edge of the salient it’s clear the Turkish president was serious about his threat.
Because the United States is relying on Kurdish forces to take the Islamic State capital of Raqqa, Turkish aggression against the SDF is clearly damaging to American objectives in Syria. It appears that rather than try to talk Erdogan out of an offensive, the Trump Administration has decided to simply present him with a fait accompli, by placing American forces in the way of an Turkish/FSA advance.
With American troops now in Manbij, Turkish aggression against SDF forces has been all but ruled out, similar to how the introduction of Russian forces in regime areas ruled out western military action against Assad. The political risks are too high and diplomatic repercussions are simply too severe. This is especially given the fact the SDF has also invited Russian convoys and regime troops into the city and has agreed to hand over some areas west of the city to government control.
What this situation creates is a multi-national tripwire that will prevent Turkish-backed forces from attacking SDF controlled territory. With the regime controlling the western approaches to the city the introduction of Russian advisers to those areas is inevitable. If Turkey wants Manbij, they will have to go through Russian, Syrian and American troops to get to it.
The U.S has denied coordination with Russia and the regime and their presence seems to be of solely the work of the SDF. Turkey, for it’s part is now threatening to stop it’s military operations against ISIS unless the United States and Russia “cooperate” with Turkey on the issue. What will happen next is up in air, but for now, the SDF are safe from Turkish aggression and this will hopefully allow them to concentrate more of their forces against ISIS rather than having to leave them in the north to fight to FSA, who are nowhere near the ISIS capital in Raqqa.