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North Korea Reveals Construction of Nuclear-Powered Submarine

Kim Jong Un's inspection of the submarine project signals potential advancements in Pyongyang's military capabilities, though experts question the timeline and external support.

North Korea's leader Kim Jong Un inspects a nuclear submarine during a visit to a shipyard in this photo released by North Korea's official Korean Central News Agency on March 8, 2025.
North Korean Leader Kim Jong Un pictured on June 19, 2024, in Pyongyang, North Korea.
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Overview

  • North Korea has publicly disclosed its first nuclear-powered submarine under construction, a vessel reportedly capable of carrying up to 10 nuclear-capable missiles.
  • State media released images of Kim Jong Un visiting a shipyard to review the project, marking a significant step in his 2021 pledge to modernize the country's naval forces.
  • Experts suggest the submarine could enhance North Korea's ability to launch underwater missile strikes, which are harder to detect, raising security concerns for South Korea and the U.S.
  • Speculation exists that Russia may have provided technological assistance in exchange for North Korean support in the Ukraine war, though this remains unconfirmed.
  • The announcement coincides with heightened tensions and upcoming U.S.-South Korea military drills, which North Korea views as a threat to its sovereignty.