Indo-Pacific — 2026-08-25

South Korean Public Support for Nuclear Weapons Surpasses 70 Percent as Debate Enters Mainstream

BLUFSustained two-thirds-plus support for an indigenous deterrent now functions as a structural constraint on Seoul's diplomacy, narrowing the space for concessions in any future arms-control framework with Pyongyang.

A survey commissioned by the East Asia Institute and conducted by Hankook Research on July 20-21 found 69.1 percent of 1,547 South Korean adults support the country possessing its own nuclear weapons if the North Korean nuclear threat persists, up from 67.5 percent last year 1. Opposition fell to 19.6 percent from 21.1 percent 1. Support has fluctuated between 58.5 percent in 2023, after the Washington Declaration on extended deterrence, and 71.4 percent in 2024 amid deepening North Korea's ties with Russia 1. The same survey found 88.4 percent of respondents view North Korea as a military threat, while perceived threat from China rose to 78.9 percent and from Russia to 51.1 percent 1.

Analysis
Sustained support above two-thirds, holding despite the post-Washington Declaration dip, reflects a structural floor rather than a transient spike, constraining Seoul's room in any freeze-talks framework with Pyongyang, though a single-source poll from Korea JoongAng Daily carries the figures with limited independent corroboration. Rising threat perception of China and Russia broadens the domestic case for self-reliant deterrence beyond North Korea alone, complicating government messaging that ties restraint solely to Pyongyang's behavior; the uptick may instead reflect general threat-perception inflation across all three adversaries rather than a specific hardening of nuclear-armament preference. Sustained majority support through the next election cycle would give candidates favoring indigenous enrichment or NATO-style nuclear-sharing viable electoral footing, forcing Washington to weigh extended-deterrence concessions against South Korean autonomy demands.
2 sources
  1. South Korean support for nuclear armament nears 70% amid North Korea threat, survey finds - Korea JoongAng Daily
  2. Korea Weighs Conditions for Freezing Norths Nuclear Program First - Seoul Economic Daily

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