Elderly jihadis are teaching young orphans to be suicide bombers according to a horrifying new video released by the terror group.

Islamic State's stream of sick videos has dried up in recent weeks as the beleaguered militants desperately try to cling onto pockets of power in Iraq and Syria.

But while the fighters continue to lose ground in cities such as Mosul and Raqqa, once strongholds for the group, a clip has emerged showing an old man grooming impressionable youngsters.

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The elderly jihadi pushes two young boys on a swing in a playground thought to be in the city of Deir ez-Zor

A boy, who only looks around three or four-years-old, sits in front of the elderly Islamic preacher

The 13-minute long video starts with two old men preaching with a child between them as they sit in the desert.

A haunting section of the clip shows children wrapping suicide vests around themselves before chanting with one of the elderly jihadis.

The trainer is then seen sat in a circle with a boy as young as three or four in front of him as he talks to the boys.

He then drives them to a market place to get fitted for loose clothing which could conceal a suicide vest and on the way there in the truck - modified for suicide bombing - the boys and the old man chant back and forth.

The old terrorist tasked with training the next generation of Islamic State suicide bombers

The video also features the orphans shouting 'Allahu Akbar' as their leader performs a ceremonial slaughter on a sheep

Carrying toy guns and wearing their new garments, they are then seen walking to a temple before being taken to a training area where the smiling boys are told to run and try to jump up and grab a real, loaded gun.

When one child manages to get his hands on it, he fires rounds into the air with a big grin on his face.

All dressed in white, the boys are seen frolicking in some water after the man seemingly charged with brainwashing them continues to preach to the camera.

The video also features the orphans shouting 'Allahu Akbar' as their leader performs a ceremonial slaughter on a sheep.