# Lawmakers split on nuclear submarine study

> Japan's lawmakers debate adding nuclear submarine research to security documents.
- Title: Lawmakers split on nuclear submarine study · The Japan Times
- Summary: Japan's lawmakers debate adding nuclear submarine research to security documents. Japan's government plans to revise security documents by year-end but faces…
- Keywords: japan, nuclear submarine, security documents, self-defense forces, lawmakers, revised documents, year-end, news, politics, world, split, nuclear
- Source: The Japan Times — https://japantimes.co.jp/news/2026/10/13/japan/politics/nuclear-submarine-study-split
- Author: No Author
- Published: 2026-10-13T11:13:00+00:00
- Read time: 1 min
- Topics: japan, nuclear submarine, security documents, self-defense forces, lawmakers, revised documents, year-end, news, politics, world
## Lawmakers debate nuclear submarine research
Japan's government plans to revise security documents by year-end but faces division over including nuclear submarine research.
## Political discussions underway
Discussions have so far been led mainly by some eager politicians, and the purpose of the possible nuclear submarine introduction remains unclear.
## Revised documents timeline
Aiming to revise the three documents by year-end, the government is expected to kick off full-fledged coordination with the ruling parties soon on the update.
## Potential challenges ahead
Pundits say discussions regarding nuclear submarines may be bumpy, citing the unclear purpose and political divisions.
## Key takeaway

Japan's government plans to revise security documents by year-end but faces division over including nuclear submarine research.