Horrific video of beheading BY CIA AL-QAEDA raises questions of US arms supply to Syrian TERRORISTS (VIDEO)

Another act of brutal violence reportedly by US backed Syrian Al-Qaeda rebels has appeared on the web.

Unverified video shows the beheading of 3 supposed government supporters.

The title of the graphic footage suggests an orthodox Christian bishop was among the victims, although other reports claim he'd been shot dead in an assault on a monastery