The end is certain for the regime of Bashar al-Assad, the question is only when since it is rather certain how it will occur. The United States government just sent Patriot missile batteries to Turkey along with 400 American troops where they will join missiles and troops from Germany and the Netherlands. If Assad sends missiles into Turkey they will be destroyed and if they do arrive, Turkish troops will head for the Syrian border. Rebel forces are seizing government military bases, they are in Damascus, and it is almost certain that within weeks, troop desertions will dramatically rise.
The central Syrian concern is what or who appears once Assad departs. Frankly, it is not out of the question for a new civil war to erupt once the thug leader of Syria departs. Obama has been careful to hold off supplying weapons to Syrian rebels because no one knows if al-Qaeda or religious fanatics will assume control over the rebellion. This is one time to wait-and-see.