The North Korean Troops in Russia Have Now Gained Enough Combat Experience to Change East Asian Security

North Korean soldiers fighting in Ukraine are gaining modern warfare experience. Here is why this changes the security calculus for South Korea, Japan, and the US in East Asia.

The deployment of North Korean military personnel to Russia's Ukraine campaign — confirmed by multiple intelligence agencies and acknowledged by Ukrainian officials — is in its sixth month of operation and has moved past the initial deployment phase into the territory where operational lessons are being systematically learned and transmitted back to Pyongyang.

North Korean forces in Russia are gaining experience in three specific domains that their isolated training environment cannot provide. First, combined arms warfare: the specific coordination of artillery, armour, infantry, electronic warfare, and drone operations in real offensive operations against defended positions — the kind of warfare that North Korea's peacetime exercises can only approximate.

Second, drone warfare — both offensive and defensive. Ukraine's FPV drone dominance, Russia's Shahed-type attack drone programme, and the specific counter-drone electronic warfare that both sides deploy are all being observed and in some cases operated by North Korean personnel. For a country whose military planning centres on defeating a more technologically sophisticated adversary (South Korea and US forces), firsthand drone warfare experience has specific operational value.

Third, Western weapons system performance. North Korean military planners have had decades of theoretical analysis of US and South Korean military equipment. In Ukraine, they can observe actual performance of many of these systems — Javelin missiles, Bradley infantry fighting vehicles, Patriot air defence — against real operational targets, in real operational conditions. The gap between theoretical and observed performance is militarily significant.

For South Korean and Japanese security planners, the North Korean combat experience accumulation changes specific threat assessments. Forces that have been combat-tested are different from forces that have only trained — in morale, in tactical flexibility, and in the specific knowledge about what works and what doesn't that only real operations provide. South Korea is accelerating its own military modernisation timelines in specific categories specifically in response to this assessment.