Are We Seeing The End Of South Korea Relying On The US?

The current debate over possible South Korean military participation in the Strait of Hormuz illustrates this tension. While Seoul has reportedly considered preparations for a possible deployment, opposition has emerged over committing South Korean military resources to a conflict geographically distant from the Korean Peninsula. The issue highlights the distinction between alliance obligations and South Korea's own national strategic priorities.

South Korea's primary security concerns remain centered on the Korean Peninsula and Northeast Asia, whereas US strategic responsibilities extend across Europe, the Middle East, and the Indo-Pacific. Thus, the divergence between the two allies is structural and may not be easily covered by rhetoric or political leadership from the two countries.

The renewed push for strategic autonomy is emerging from multiple quarters of South Korean society. Many South Koreans believe that the country must undertake significant strategic adjustments in response to fundamental changes in the South Korea – US relationship. Kim Min-seok similarly emphasized that the essence of this changing relationship lies in the waning of America's“overwhelming hegemony.” From this perspective, South Korea's national strategy can no longer depend exclusively on any single external power; instead, the country must cultivate its own indispensable strategic capabilities.

For many South Koreans, the era when the United States acted as a“good big brother” is giving way to a more“transactional partnership.” Measures such as proposals to reduce recent joint military exercises while simultaneously encouraging South Korea to strengthen its autonomous defense capabilities illustrate this changing dynamic. Together, these developments point to a broader transformation of the alliance and reinforce the argument for greater Korean strategic autonomy.

The emerging pursuit of strategic autonomy is also increasingly grounded in South Korea's technological and industrial transformation over the past several decades. Economic development has created capabilities that can serve not only commercial objectives but also national-security requirements. South Korea's growing strength in artificial intelligence, semiconductors, autonomous systems, cyber capabilities, space technology and advanced manufacturing is providing a new technological foundation for national confidence and strategic autonomy.

Another factor contributing to South Korea's pursuit of greater strategic autonomy is the perceived relative decline in US military power. Recent developments in the Middle East, particularly the US military experience in the Iran conflict, have raised questions in some South Korean circles about Washington's capacity and willingness to remain the principal security provider across multiple regions. These concerns are particularly relevant to South Korea, which faces a security environment dominated by China and North Korea, whose combined military capabilities and strategic resources far exceed those of Iran. Questions are increasingly being raised in South Korea about whether the United States, if it faces difficulties in containing a comparatively smaller power such as Iran, can be expected to effectively deter the combined might of China and North Korea.

The evolving China, Russia, and North Korea relationship further complicates Seoul's strategic environment. North Korea's growing nuclear weapons, missile capabilities, and military modernization continue to alter the regional balance of power.

For South Korea, this creates a difficult strategic equation. It cannot abandon its alliance with Washington at this stage, but excessive dependence on the United States may leave Seoul vulnerable when American and Korean strategic priorities do not fully coincide.

These strategic dilemmas are pushing South Korea toward strategic diversification – expanding its economic, technological, diplomatic, and security partnerships while maintaining the US alliance. Such diversification would strengthen Seoul's capacity to respond independently to changing regional circumstances and reduce the vulnerabilities associated with reliance on any single external power.