Vox:

On Tuesday, Bloomberg News reported that US and Kurdish forces in Syria had killed 200 fighters last week, including many Russian contract soldiers, according to several Russian sources and an American official.

The Russians, who were fighting on the side of embattled Syrian leader Bashar al Assad, attacked a military base in the Deir ez-Zor region of Syria on February 7, according to the Bloomberg report. US forces stationed with Syrian Democratic forces troops on the base responded with artillery fire and air strikes.

Colonel Ryan Dillon, a spokesperson for United States Central Command, confirmed in an email that that there was a raid conducted by pro-Assad forces, but would not confirm that any Russian fighters had been killed. US coalition forces were in “regular communication with Russian counterparts before, during and after the thwarted, unprovoked attack,” he wrote. “Russian officials assured Coalition officials they would not engage Coalition forces in the vicinity.

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