ISIS forces child executioners to brutally shoot dead 25 Syrian regime soldiers in front of bloodthirsty crowds at ancient Palmyra ruin

ISIS has released a significant new execution video from the historic city of Palmyra, in the Syrian desert.

Child executioners are shown in the video being forced to brutally slaughter a group of more than 25 regime soldiers. 

The video shows the soldiers lined up on their knees on the stage of the Roman amphitheatre, which had formerly been used for an annual festival in the city.

A baying crowd of men and boys gathered in the restored ruin waiting for the slaughter, many wearing military uniforms and headscarves. 

Behind each condemned man stands a child executioner, all wearing desert camouflage and brown bandanas, many of whom appear to be no older than 12 or 13 years old.

ISIS fighters can be seen standing or sitting on top of the ancient ruins, watching over the crowd as they wait for the slaughter.  

A leader speaks to the audience, in front of an enormous ISIS flag draped across the back of the stage. 

On a command, the condemned soldiers are killed simultaneously with a shot to the head