Here is something that is addressing the root of the Syrian problem

The problem is the terrorism of the Assad regime on its own people. For them there is only one way for their survival. It is to get the hell out.

So:

http://www.spiegel.de/international/zeitgeist/many-syrian-refugees-fleeing-civil-war-have-lost-faith-in-a-solution-a-1052576.html

The US wants Assad out. 

Then let the US do a Osama bin Laden on him - send in a Navy Seal unit and extract him out and present him to the ICC at the Hague for war crimes.

The cost of all the missiles from drones and bombs from F-16 is costing the US millions of precious dollars. I am sure the tab after these four years is running up in the billions.

If this is done, immediately the flow of refugees will stop.