Most likely, Russia will leave and will already begin evacuating the S-400 systems provided to Assad toward the Tartus naval base. Most likely, it will leave, most likely it will leave.
Russia will leave Syria.
I lean towards the idea that substantive negotiations on a ceasefire will begin. As for how they will end, as Viktor Stepanovich Chernomyrdin once said: "That’s a philosophical question."
In response to the question: "Do you believe that within the next six months there will be a truce, a ceasefire, or that Putin won’t agree to it?"