Prof Joshua Landis' prediction via the BBC:

Prof Landis argues that what is going on in the Kurdish north-east offers a useful pointer to President Assad's "Plan B" should his control over key cities like Damascus and Aleppo crumble.

He says that the "embattled president withdrew government forces from the north-east because he couldn't control it and wanted to focus on the most important battles in Aleppo and Damascus".

"But in the back of the president's mind, there may be the thought that empowering the Kurds is a way of weakening the Sunni Arab majority and underlining the risks of fragmentation should his government fall. It's a strategy of playing upon divisions to sow chaos," he said.

This way, says Prof Landis, "the Syrian Army - which is rapidly becoming an Alawite militia, whilst still the strongest military force - may lose control over large swathes of the country, but will remain a vital factor in determining the political outcome in Syria".

It is a bleak prospect.

Prof Landis asserts that President Assad "may lose Syria, but could still remain a player, and his Alawite minority will not be destroyed".

"That's the future of Syria," he says, with little enthusiasm. "It's what Lebanon was and what Iraq became."
I think that's the likely alternative to a complete Assad collapse.