{
  "id": 12760024,
  "title": "Japan considers having nuclear-powered-sub study in security documents",
  "url": "https://urgent.news/2026/10/08/japan-considers-having-nuclear-powered-sub-study-in-security-documents",
  "topic": "world",
  "section": "World",
  "published": "2026-10-08T01:40:00.000Z",
  "source": {
    "name": "Japan Times",
    "slug": "japan-times",
    "url": "https://www.japantimes.co.jp/news/2026/10/08/japan/japan-nuke-subs-study-security-documents/"
  },
  "original_language": "en",
  "account": "The Japanese government is contemplating whether to include a proposal for studying the potential acquisition of nuclear-powered submarines in its three key security documents, set for revision by year-end. This comes amid arguments that such underwater vessels, capable of prolonged submersion and long-distance travel, are crucial for preserving Japan's deterrence and response capabilities as China's military presence in the Pacific grows. The junior ruling Japan Innovation Party had previously urged the government to \"swiftly introduce\" nuclear submarines. Discussions on the matter have also taken place at a government expert panel reviewing the revisions to the security documents. However, many in the main ruling Liberal Democratic Party are hesitant about this move, and the government intends to decide on the final wording after consulting with the ruling bloc and the expert panel. Conventional submarines require raising air intake and exhaust pipes above the surface during operation, whereas nuclear submarines can remain submerged for extended periods without this necessity. They can also achieve speeds exceeding 50 kph, compared to around 35 kph for conventional submarines. Furthermore, nuclear submarines can be constructed larger, potentially allowing for the installation of counterstrike capabilities. A senior Defense Ministry official highlighted the swift escape capability of nuclear submarines after firing, making them highly useful. However, nuclear submarines also pose challenges, such as the need for specialized engineers to operate and maintain the nuclear reactors, as well as the significant construction and operating costs, which could increase defense spending. There are also concerns about compatibility with Japan's atomic energy basic law, which restricts nuclear energy use to peaceful purposes. Despite the potential benefits, a senior LDP lawmaker believes that even after a study, the conclusion may be that nuclear submarines are unnecessary.",
  "summary": "The move comes as proponents argue that the introduction of such vessels is essential for maintaining Japan's deterrence and response capabilities.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}