2 out of 3 Syrian Rebel Fronts and 7-8 out of 9 Syrian Fighting Groups are Islamist

The Economist very effectively debunks the idea that it would be possibly to siphon western arms only to the "right" people.  Given that the vast majority of rebel groups are jihadi/islamist, any weapons we do send over there has a very high likelihood of ending in the wrong hands (the only definitely not Islamist is the Kurdish group the Democratic Union Party).  Heck if we can lose track of guns in a federally run gun tracking program like Fast and Furious, leading to the death of hundreds of innocent people, how can we be at all confident that we can keep track of them half a world away?  It boggles the mind.  Anyway here is a very handy chart from the Economist identifying the key rebel groups: