Skip to content
Search

Latest Stories

Welcome! Log in to stay connected and make the most of your experience.

Input clean

Do Japan and South Korea Need Nuclear Weapons?

<p>Trilateral meeting</p>

The North Korean regime of Kim Jong-un conducted its sixth underground nuclear test early this September – which Pyongyang claims as its first test of a hydrogen bomb – and in late August and again, two weeks later, the hermit kingdom launched a ballistic missile directly over the territory of Hokkaido in northern Japan. Now, the U.S. and its key allies in the region – primarily South Korea and Japan – look ahead to the anniversary of the founding of North Korea’s communist party on October 10, which may yield yet another nuclear provocation from the rogue state.

For both Tokyo and Seoul, the nuclear threat posed by North Korea is undeniable, yet neither Japan nor South Korea – rich and technologically capable developed countries – possesses their own nuclear deterrent against Pyongyang or the long term threat posed by rising Chinese military power in the region. The reasons for this are varied, but at the end of the day, one stands out: The U.S. nuclear umbrella. For both countries, the reassurance of the United States that it will retaliate in kind to a nuclear attack on either ally is the lynchpin holding them back. However, as Pyongyang closes in on developing an intercontinental ballistic missile (ICBM) capable of delivering a nuclear weapon to the U.S. mainland, some wonder whether Washington would really be willing to trade Los Angeles for Seoul in a shooting war.

Keep reading...Show less
Access all of The Cipher Brief’s national security-focused expert insight by becoming a Cipher Brief Subscriber+ Member.

Related Articles

Report for Tuesday, July 8, 2025

7:54 America/Chicago Tuesday, July 8 [...] More

U.S. Cyber Defense Starts with Defining Standards and Driving Collaboration

OPINION — President Donald J. Trump has returned to office with the renewed revelations that Chinese government-affiliated hackers continue to [...] More

Expert Q&A: What to Watch for at the Trump-Netanyahu Meeting

EXPERT Q&A — Israeli Prime Minister Benjamin Netanyahu arrived in Washington D.C. on Monday to meet with President Donald Trump at the White House — [...] More

Report for Monday, July 7, 2025

8:03 America/Chicago Monday, July 7 [...] More

Can President Trump Get a "Big, Beautiful" Deal in the Middle East?

Can President Trump Get a "Big, Beautiful" Deal in the Middle East?

CIPHER BRIEF REPORTING – When Benjamin Netanyahu and Donald Trump meet at the White House Monday, they will bring different ideas for resolving two [...] More

To Counter China, Reform U.S. Intelligence for the Digital Age

EXPERT PERSPECTIVE / OPINION -- The United States is facing a quiet and rapidly growing threat across the digital landscape, an unseen mathematical [...] More

Report for Friday, July 4, 2025

8:27 America/Chicago Friday, July 4 [...] More

Dead Drop: July 4

IN THIS WEEK’S EDITION: We’re wishing the U.S. a very happy birthday and sending our gratitude to those who are working overseas to help keep the [...] More

Expert Q&A: Former CENTCOM Commander on U.S. Troops in the Middle East

EXPERT Q&A — The American force posture in the Middle East — some 40,000 troops spread across the region — came into focus following the 12-day war [...] More