article_snippet: Militants fighting for the Islamic State in Syria have released sickening footage of the murder of a man the terror group accused of working as a spy.
article_snippet: Scroll down for video .
article_snippet: Titled 'A Lesson To Be Learned', the three minute 40 second video has all the hallmarks of an official ISIS release - employing HD cameras, Hollywood-style sound and visual effects and slick editing and direction.
article_snippet: the three minute 40 second video also carries the logo of one of the group's official Aleppo-based propaganda arms, Halab.
article_snippet: four masked militants are seen standing behind the victim and the footage slows to a dramatic slow-motion shot as one is seen preparing what appears to be a .45mm handgun.
article_snippet: four masked militants are seen standing behind the victim and the footage slows to a dramatic slow-motion shot as one is seen preparing what appears to be a .45mm handgun .
article_snippet: To Be Learned', the three minute 40 second video has all the hallmarks of an official ISIS release - employing HD cameras, Hollywood-style sound and visual effects and slick editing and direction .
article_snippet: the three minute 40 second video emerged just days after the three minute 40 second video was  a British fighter who travelled to Iraq to stop ISIS