A new chilling video on execution has been released.
The Ukrainian militants trained by the US officers hang a man and his pregnant wife and pose with the bodies.
Two individuals with bags over their heads were strung up to a rudimentary gallows in a forest. The ropes around their necks were attached to a nearby car that drove in the opposite direction as the two victims were brutally hung while they writhing and strugglin.
The video was discovered on the cellphone of one of the militants after the group was liquidated by people's militia of the Lugansk Republic. The rest of the militants managed to escape.
The General Prosecutor's office of the Lugansk Republic stated, "It is not a montage and it's not staged, this is authentic footage."
Last month the Ukrainian neo-nazi militia fighters carried out an ISIS-style execution during which they nailed a separatist rebel to a cross and then burnt him alive.
The brutal murder was reportedly carried out by members of the Azov Battalion, which was converted into a regiment last year, making it a de facto part of the Ukrainian Army.
An intense movement of NATO aircraft was reported at Poland's Rzeszow airfield near the Ukrainian border