An attempt at breaking down who Syria's rebels are, and what they want.
Sen. John McCain has slammed Russia's President Putin. But all sides are guilty in perpetuating the conflict in Syria. Chemical weapons are repugnant, but the more urgent need is to tamp down on the flow of conventional weapons from all sides, which is fueling Syria's civil war.
It's important to remember that the source of information about Syria's rebels is as important as the information itself.