IRAQ Based on the historical context, the video was filmed in 2004 after the US invasion of Iraq. There, the US created the so-called Iraqi National Guard, which was part of the government army. They received military training from the US and their goal was to fight against insurgent groups under the supervision of Uncle Sam.
One of these insurgent groups, of which there were many in Iraq at the time, was the so-called Mujahideen Army. It was formed in response to the presence of the US military in Iraq and was made up of former Saddam Hussein officers, but also Sunni Islamic radicals and nationalists.
They used methods of fear-mongering and propaganda, like any terrorist group. They recorded videos of executions and spread them via the Internet. This video is one of them. It shows the execution of a member Iraqi National Guard.
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https://en.wikipedia.org/wiki/National_Guard_(Iraq)
https://en.wikipedia.org/wiki/Mujahideen_Army_(Iraq)