It is looking like the force that attacked the SDF in oil field East of Deir ez Zour was primarily Russian. That is a big change from what had been happening, and an indicator that it was viewed as a strategic move by the Russians, worthy of great risk.
It is a public debacle in Russia, and they are lying as hard as they can about it.
I wondered why I had not heard anything solid as a complaint about it.
The means they simply lied in the de-conflict Communications.
Initial number I read was about 205 deaths.