Members of a combined Afghan and coalition security force collected a cache of weapons after clearing a known Haqqani network foreign fighter encampment site in Paktika province, Afghanistan - July 21, 2011.
The U.N. General Assembly overwhelmingly approved the first international treaty regulating the multi-billion dollar global arms trade Tuesday.
Iran, North Korea and Syria voted "no" on Tuesday, while Russia and China, both major arms exporters, abstained.
Suzette Grillot is the co-author of the 2009 book The International Arms Trade. She says Syria opposed the treaty because it does nothing to prevent weapons from flowing to non-state actors, like the Syrian opposition.