The number is stark: up to 50,000. That is how many additional North Korean soldiers Ukrainian and international intelligence agencies now believe Pyongyang is preparing to send to Russia — on top of the 14,000–15,000 already deployed to the Kursk region since late 2024. Ukrainian officials have also confirmed that North Korean ballistic missiles are being fired from Russian territory. President Volodymyr Zelenskyy warned this week that the combat experience North Korean troops are gaining could eventually threaten not only Ukraine but the wider Asia-Pacific region.

Analysts are divided on what a larger North Korean force would actually change on the ground. Oleksandr Kovalenko, a military expert at the Ukrainian Center for Security Studies, told Deutsche Welle that the new troops would most likely be used to hold Russian border territories — particularly the Kursk region and possibly southwestern Voronezh. That role, while not on Ukrainian soil, matters enormously: it would free up roughly 15,000 Russian soldiers to fight on active front lines near Vovchansk, Kharkiv, Sumy, and Chernihiv. Kovalenko does not expect North Korean units to cross into internationally recognised Ukrainian territory.

Russian military analyst Ruslan Leviev is more sceptical. "It is one thing to recapture Russian territory, and an entirely different thing to be present on internationally recognised Ukrainian territory, taking part in a war of aggression," he said, arguing that the diplomatic and legal distinction between the two situations remains significant. Leviev added that he had seen no concrete evidence of a major North Korean build-up, and that Russia's own recruitment numbers suggest Moscow is not yet running short of soldiers. What remains unresolved is the longer game.