Understanding the KN-25: Tianran Xu on North Korea’s Expanding Nuclear-Capable Missile Arsenal

In a recent article for NK Pro, ONN Senior Analyst Tianran Xu examined North Korea’s 600 mm calibre multiple rocket launcher system (KN-25), highlighting its growing role in the Korean People’s Army’s conventional and nuclear strike capabilities. The analysis sheds light on the evolution of North Korea’s missile forces and the operational concepts underpinning Pyongyang’s regional deterrence strategy - issues that are central to ONN’s mission of improving understanding of nuclear risks and security dynamics in Northeast Asia.

On 14 March 2026, Kim Jong Un inspected a live-fire drill of 600 mm calibre multiple rocket launchers (referred to as the KN-25 by the US intelligence community) by two Korean People’s Army’s long-range artillery companies in the western area. The drill, involving 12 launchers in total, marked the 25th launch of the KN-25. With a total of around 90 rockets having been launched since 2019, the KN-25 is undoubtedly North Korea’s most frequently fired missile.  Despite its perceived limitations, the KN-25 has established itself as the successor to vintage SRBMs in the KPA’s arsenal. Tianran Xu discussed the unique features of North Korea's 600 mm nuclear-capable multiple rocket launchers and reported that in any future high-intensity conflict, the KPA will likely rely on the KN-25 and aeroballistic-type missiles (the Hwasong-11 series that can manoeuvre during flight) to strike targets in South Korea and neighbouring territories.