For weeks, Ukrainian troops braced for an unfamiliar enemy: North Korean soldiers sent to bolster Moscow´s forces after Ukraine launched a lightning-fast incursion and seized territory in Russia’s Kursk region over the summer. Their arrival marked a new and alarming phase in the war. And while initially inexperienced on the battlefield, North Korean troops have adapted quickly – a development that could have far-reaching consequences as they gain combat knowledge in the war against Ukraine. Unlike the Russian troops Ukraine has been battling for nearly three years, Kyiv´s forces were uncertain about what to expect from this new adversary, drawn into the war after Moscow and Pyongyang signed an agreement pledging military assistance using “all means” if either were attacked. One Ukrainian soldier who has witnessed North Koreans in battle described them as disciplined and highly methodical, saying they were more professional than their Russian counterparts. The soldier spoke to The Associated Press on condition of anonymity because he was not authorized to discuss the sensitive military issue. However, other soldiers, including Ukrainian special forces, have shared battlefield drone footage on the Telegram messaging app mocking their tactics as outdated. Nevertheless, there is consensus among Ukrainian soldiers, military intelligence and others monitoring developments on the ground: While Pyongyang´s troops lacked battlefield experience when they arrived, that has been changing quickly. With 1.2 million troops, North Korea’s military ranks among the largest standing armies globally. But its post-Korean War foreign engagements have been limited, leaving them inexperienced with modern warfare technologies like drones. “For the first time in decades, the North Korean army is gaining real military experience,” said Andrii Yusov, spokesperson for Ukraine´s military intelligence agency. “This is a global challenge – not just for Ukraine and Europe, but for the entire world.” Despite Ukrainian, U.S. and South Korean assertions that Pyongyang has sent 10,000-12,000 troops to fight alongside Russia in the Kursk border region, Moscow has never publicly acknowledged the North Korean forces. While reports of their presence first emerged in October, Ukrainian troops only confirmed engagement on the ground in December. Analysts say that without the influx of North Korean troops, Russia would have struggled to pursue its strategy of overwhelming Ukraine by throwing large numbers of soldiers into the battle for Kursk. While Moscow´s counterattack in Kursk has inflicted thousands of Ukrainian casualties, Kyiv’s overstretched forces have managed to hold on to about half of the 984 square kilometers (380 square miles) seized in August, though the situation remains dynamic. Besides the symbolic impact of Ukraine’s success capturing Russian territory, control of Kursk could also be a bargaining chip in any ceasefire negotiations. According to Ukraine´s intelligence agency, the North Korean soldiers are operating alongside Russian units, with the latter providing reconnaissance and electronic warfare support. The North Koreans wear Russian military uniforms with fake military IDs in their pockets, according to a report by a Ukrainian military unit that has observed them on the battlefield, and they could easily be mistaken for Russian soldiers.