Global Risk

Nuclear Hiccup in South Korea: The Limits of Tactical Nukes

03.02.11 | 2 min read | Text by Hans Kristensen
The F-16s (left) of the 8th Fighter Wing at Kunsan Air Base in South Korea lost their nuclear capability in 1991. The F-15Es (right) of the 4th Fighter Wing at Seymour Johnson Air Base in North Carolina no longer are certified for the nuclear strike mission. Instead, extended deterrence is served by conventional forces and long-range nuclear bombers and ballistic missiles.

By Hans M. Kristensen

In a surprising report, Korea Joongang Daily reported yesterday that White House coordinator for arms control and weapons of mass destruction, Gary Samore, had said that the United States would redeploy nuclear weapons to South Korea if the South Korean government asked for it.

I don’t know what Samore said or meant to say, but the hiccup comes at particularly bad time after two North Korean nuclear tests, its suspected sinking of a South Korean warship and the shelling of Yeonpyeong island, and repeated large-scale U.S.-South Korean military exercises, all of which have raised tension on the troubled Korean Peninsula again.

Fortunately the White House quickly corrected the record, explaning that “tactical nuclear weapons are unnecessary for the defense of South Korea and we have no plan or intention to return them” to the country.

It is particularly important that the rebuttal included more than “we have no plan” but also reiterated the fact that tactical nuclear weapons are “unnecessary” for the defense of South Korea.

As a consequence, the U.S. Air Force has over the past several years phased out the nuclear mission of two fighter wings in the United States that previously were tasked to forward deploy to Europe or Asia with tactical nuclear weapons (an example of a nuclear exercise in 1998 is available here). The F-15E aircraft of one of the wings, the 4th Fighter Wing at Seymour Johnson Air Base in North Carolina, are still considered nuclear capable but are no longer nuclear certified. Instead, the extended deterrence mission in Asia is, as it should be, served by forward-deployed conventional and long-range nuclear forces.

That tactical nuclear weapons are not necessary to defend a key ally is a fact that NATO should learn from. Nearly 200 U.S. tactical bombs are stuck in Europe because the alliance can’t figure out how to do what South Korea did 20 years ago. All the more strange because NATO, unlike South Korea, doesn’t have a large military threat right next door.

Background: A History of US Nuclear Weapons in South Korea

This publication was made possible by a grant from Carnegie Corporation of New York and Ploughshares Fund. The statements made and views expressed are solely the responsibility of the author.

publications
See all publications
Global Risk
Blog
The Pentagon’s (Slimmed Down) 2025 China Military Power Report

On Tuesday, December 23rd, the Department of Defense released its annual congressionally-mandated report on China’s military developments, also known as the “China Military Power Report,” or “CMPR.” The report is typically a valuable injection of information into the open source landscape, and represents a useful barometer for how the Pentagon assesses both the intentions and […]

01.09.26 | 7 min read
read more
Global Risk
Report
On the Precipice: Artificial Intelligence and the Climb to Modernize Nuclear Command, Control, and Communications

Successful NC3 modernization must do more than update hardware and software: it must integrate emerging technologies in ways that enhance resilience, ensure meaningful human control, and preserve strategic stability.

01.08.26 | 2 min read
read more
Global Risk
Blog
What’s New for Nukes in the New NDAA?

The FY2026 National Defense Authorization Act (NDAA) paints a picture of a Congress that is working to both protect and accelerate nuclear modernization programs while simultaneously lacking trust in the Pentagon and the Department of Energy to execute them.

12.18.25 | 5 min read
read more
Global Risk
Report
Tracking the DF Express: A Practical Guide to Evaluating Chinese Media and Public Data for Studying Nuclear Forces

While advanced Chinese language proficiency and cultural familiarity remain irreplaceable skills, they are neither necessary nor sufficient for successful open-source analysis on China’s nuclear forces.

12.16.25 | 10 min read
read more