Pyongyang, Sept. 3 -- Just days before Kim Jong Un is due to stand with Russia's Vladimir Putin to witness a display of China's military might, North Korea has released a propaganda film praising its troops' efforts fighting for Russia in its war against Ukraine.

The 20-minute video, released by North Korean state media KCTV, showed heavily dramatized shots of soldiers on the snow-covered battlefield - handling weapons, holding meetings with Russian soldiers and installing bombs on trees, reports CNN.

It also showed aerial footage purported to be of damage inflicted by North Korean soldiers, with clips of explosions and targeted strikes.

Other parts of the video emphasized the soldiers' patriotism - with one shot appearing to show soldie...