"Ironically this man has spent a decade of his life under the same Royal Air Force that is responsible for the delivery of those arms." He then says "Your evil allies of America, which continues to strike the Muslims in Iraq, and most recently bombed the Haditha Dam, will only accelerate your destruction. And playing the role of media lap dog, Cameron, will only drag you and your people into another bloody unwinnable war."

When he shows Henning, he tells Cameron that if he persists in fighting the Islamic state, he will have the blood of his people on his hands.

According to Syrians on Twitter, Henning is an British Aid worker who went to Idlib. He may have been kidnapped in Al Dana. Al Dana housed a prison in the basement of ISIS headquarters. Dozens were freed from it in January, 2014 when Syrian rebels took control. According to this article, "“Prisoners include opposition fighters and activists held by ISIS, and those freed did not include the kidnapped Christian bishop or foreign journalists.”

Based on the references to the recent Haditha Dam bombing, it appears this video was made after Sept. 7.

Please don't put links to the video in comments. It's readily findable, although not on You Tube.