Actually Russia and US both support autonomy and some self government in Northern Syria.
Iran and Turkey are the problem.
ISIS is almost gone in Iraq and Syria. The people who ended them with the US support are the Kurds. They have allies, Assyrian and Arab elements, they are all sick of war.
You can think what you want. I don’t think you understand much of what has happened in Syria. (Yes, the US under Obama supported Jihadi’s to remove Assad. And no, Assad is NOT one of the good guys.)
I understand your stake in this but that changes no facts. The major factor in the autonomous region is not interloping countries. It is now and will be the sovereign country of Syria. If a foreign country tries to take over the state of Washington , we , the United States,are going to kill them all because that is our country to be saved from foreign aggression and saved for OUR people. This is the case with the communist kurds. They are not going to get autonomous property that does not belong to them and we should never be a party to that in anyway unless you want to see the greatest anti war movement since 1968. We need to get the hell out of Syria,NOW!!