In September 2023, North Korea officially unveiled its first tactical nuclear attack submarine, the ‘Hero Kim Kun Ok,’ marking a significant step toward establishing a sea-based nuclear deterrent. Although the submarine is a modified version of the outdated Soviet-era Romeo-class diesel-electric vessel, it has been equipped with vertical launch systems capable of firing tactical nuclear missiles, granting it limited stealth strike capabilities. Pyongyang stated the move was a response to escalating military pressure from the U.S. and South Korea, reinforcing its ‘nuclear-for-nuclear’ strategy. Analysts note that while the submarine lags behind global standards in quieting technology, endurance, and missile range, its symbolic importance is substantial—it signals North Korea’s pursuit of a nuclear triad encompassing land, sea, and air delivery systems. This development may heighten tensions on the Korean Peninsula and prompt intensified joint military exercises and missile defense cooperation among the U.S., South Korea, and Japan. In the long term, Pyongyang aims to bolster its bargaining power and ensure regime survival under extreme scenarios. The international community continues to urge diplomatic engagement to de-escalate tensions and prevent further nuclear proliferation.
2023年9月，朝鲜正式对外展示了其首艘战术核攻击潜艇“金君玉英雄号”，标志着其海基核威慑能力迈出关键一步。该潜艇虽基于老旧的“罗密欧级”柴电潜艇改装，但配备了可发射战术核导弹的垂直发射系统，具备一定的隐蔽打击能力。朝鲜官方称此举旨在应对美韩日益增强的军事压力，强化‘以核制核’战略。分析人士指出，尽管该潜艇在静音性、续航力和导弹射程等方面与世界先进水平存在差距，但其象征意义重大——表明朝鲜正努力构建陆、海、空三位一体的核打击体系。此举可能加剧朝鲜半岛紧张局势，促使美韩日进一步加强联合军演与导弹防御合作。长远来看，朝鲜发展海基核力量意在提升谈判筹码，并确保政权在极端情况下的生存能力。国际社会普遍呼吁通过对话缓和局势，避免核扩散风险升级。
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