Fresh video from the battlefields of southern Idlib province show the rebels using US-made BGM-71 TOW missiles. This weapon has never been observed in rebel use before. Coming on the heels of much speculation that the Obama administration has finally made the decision to aid the Syrian opposition with weapons, the arrival of the TOW missile in Syria is certainly suggestive. Former US Ambassador to Syria Robert Ford recently stated that he expected a move by the Administration to change the military balance in Syria.
I tend to subscribe to the theory at the end of the article- that the Saudis, with tacit Obama administration approval, is supplying the rebels with TOW missiles from their own or other friendly stocks.