A sickening video showing cheering crowds of ISIS supporters watching the barbaric murder of a Jordanian pilot on specially erected giant screens also features a smiling child telling an interviewer: 'I would've burnt him [Moaz al-Kasasbeh] with my own hands.'

Filmed in the terror group's de facto capital Raqqa, the four minute clip is titled 'Muslims' Joy at Burning of Jordanian Pilot' and was released this afternoon.

The crowd can be heard cheering and shouting religious slogans as the airman goes up in flames, before an interviewer asks for their views on the atrocity, which has been widely condemned as one of the most sickening acts ever committed to film.

Among those questioned is a child who appears no more than eight-years-old. He is seen smiling and talking vividly about the murder, while eulogising about ISIS and their barbaric acts.

Jordan's King Abdullah II today returned home after cutting short a visit to the US where he was when news broke that the pilot had been savagely murdered.

'We are waging this war to protect our faith, our values and human principles and our war for their sake will be relentless and will hit them in their own ground', he said.

The short video is filmed in a documentary style using HD cameras and contains logos and slogans associated with ISIS' self-styled media centers.

It begins with a short interview with a man who identifies himself as a fighter with the terror group, before going on include short exchanges with members of the local population.

While the interviews take place footage from Kasasbeh's original murder video are seen being played to large crowds in the background. As those being interviewed are not paying attention to the video, it is likely the gruesome execution is being broadcast on a loop in the city centre.

Even by ISIS' barbaric standards, the terror group's latest execution video - which lasts 22 minutes and was released yesterday afternoon - reached a truly depraved new low.