IS just released a video where they behead yet another hostage.
This time its David Haines , a hostage from the United Kingdom captured in Syria in 2013.
This is the video text --
Executioner - This British man has to pay the price for your promise, Cameron, to arm the Peshmerga against the Islamic State. Ironically, he has spent a decade of his life serving under the same Royal Air Force that is responsible for delivering those arms. Your evil alliance with America which continues to strike the Muslims of Iraq and most recently bombed the Haditha Dam will only accelerate your destruction. And playing the role of the obedient lapdog, Cameron, will only drag you and your people into another bloody and unwinnable war.
[Executioner with a second British hostage]
Executioner - If you, Cameron, persist in fighting the Islamic State, then you, like your master Obama, will have the blood of your people on your hands.