In September 2023, North Korean leader Kim Jong Un inspected the construction of a nuclear-powered ballistic missile submarine. According to the Korean Central News Agency (KCNA), the vessel is designed to carry submarine-launched ballistic missiles (SLBMs) and will be powered by an indigenously developed nuclear propulsion system, marking a significant step in Pyongyang’s efforts to enhance its naval strategic capabilities. Kim described the development as a ‘crucial component of strengthening the nation’s nuclear deterrent,’ aimed at countering what he called the ‘U.S.-South Korea joint military threat.’ Analysts note that if successfully deployed, such a submarine would substantially improve North Korea’s second-strike capability, making it harder for adversaries to neutralize its nuclear forces through preemptive strikes. However, there is currently no verifiable evidence that North Korea has mastered compact, shipboard nuclear reactor technology. Key challenges—including acoustic stealth, endurance, and reliable missile launch systems—remain unresolved. The international community has expressed serious concern, warning that this move could intensify regional arms competition and introduce new uncertainties to security dynamics on the Korean Peninsula and in Northeast Asia.
2023年9月，朝鲜最高领导人金正恩视察了正在建造中的核动力导弹潜艇项目。朝中社报道称，该潜艇将搭载潜射弹道导弹（SLBM），并采用国产核动力推进系统，标志着朝鲜在海军战略力量建设方面迈出关键一步。金正恩强调，发展核动力潜艇是‘加强国家核威慑力的重要组成部分’，旨在应对所谓‘美韩联合军事威胁’。分析人士指出，若朝鲜成功部署核动力潜艇，将显著提升其二次核打击能力，使敌方更难实施先发制人的打击。然而，目前尚无确凿证据表明朝鲜已掌握可靠的舰用小型核反应堆技术，其潜艇静音性能、续航能力及导弹发射稳定性仍存疑。国际社会对此表示高度关注，担忧此举可能加剧地区军备竞赛，并对朝鲜半岛及东北亚安全局势带来新的不确定性。
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