That’s a loaded question. It assumes that a peace plan will even be on the table. Again, Trump doesn’t care about war crimes, even if Mattis does. If Syria can help crush ISIL and whatever comes after it, our administration will endorse him. If there was a plan and the US didn’t endorse it, it would only be because Trump wants a “better deal”. Keep in mind the the US’s endorsement may matter as much anymore. All that being said, I’ll go with the consensus on this one.

Wildwood2000
made a comment:

Russia Seeks Syria Peace with Iran Turkey as U S Sidelined

Meyer, H. (2017). Russia Seeks Syria Peace With Iran, Turkey as U.S. Sidelined. Bloomberg. Retrieved from
https://www.bloomberg.com/news/articles/2017-01-22/russia-seeks-syria-peace-with-turkey-iran-as-u-s-sidelined

Tip: Mention someone by typing @username