The report highlights that North Korean soldiers have developed unique battlefield tactics, such as using a soldier as bait to shoot down drones or detonating grenades, holding it under the neck with one hand on the pin when the Ukrainian military approaches to avoid capture when severely wounded.

North Korean troops have been deployed to bolster Russian forces in the Kursk border region with Ukraine, where they are gaining battlefield experience despite initial heavy losses.

Two North Korean soldiers fighting in Russia were captured by Ukrainian troops this week, giving officials “irrefutable evidence” that the two countries are allied in the war against

President Volodymyr Zelensky said the soldiers were captured in the western Kursk region, where Ukraine has been fighting to hold on to territory it seized last summer.

There is mounting evidence from the battlefield, intelligence reports and testimonies of defectors that some North Korean soldiers are resorting to extreme measures as they support Russia's three-year war with Ukraine.

North Korea is “significantly benefiting” from its troops gaining battlefield experience fighting alongside Russian forces as it makes them more capable of waging war against rivals South Korea and Japan, a US official warned the UN.

Russia signed a strategic partnership treaty with Iran on Friday that follows similar pacts with China and North Korea. All three countries are adversaries of the United States, and Russia has used its ties with them to help blunt the impact of Western sanctions and boost its war effort in Ukraine.