All of this is part of the broader proxy war between the pro-Iran 'resistance axis' and the US-Israel-Gulf powers. Currently there are still some 1,000 or more US troops occupying eastern Syria. Trump during his first term said he wanted to bring the troops home, and it's unclear if this will remain a priority during his second administration.
The longer the Pentagon stays, that more that US troops are put in harm's way - for little strategic purpose other than 'securing the oil' - as Trump has said before. But the Syrian Kurds could soon make their own peace deal with Damascus, making it easier to force out the American presence. Turkey has also long wanted to see the US go.