Though I do not want to drift into politics, I think both Russia and USA will covertly help Kurds and Turkey will be drawn into a very long tiresome battle. This war may put Iran vs Sunni war on hold. Turkey war cannot influence oil supplies. So oil prices will be stable.
No one cares for Kurds, they/their land have been divided and re-divided many, many times . . .
Turkey wants a buffer Zone,
Putin with Trumps help is pushing the Kurd's into Assad's lap
It's surprising and amusing to see it all unfold . . .
Russia having a mole in white house,
these thing used to happen only in fiction (movies/novels)
.