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The Potential Impact of a Second Trump Term on Inter-Korean Relations
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US in Asia

The Potential Impact of a Second Trump Term on Inter-Korean Relations

Trump’s unconventional diplomatic style could break deadlocks, but his unpredictable approach and possible sidelining of South Korea’s strategic interests risks destabilizing the region, too.

By Jihoon Yu

Inter-Korean relations have historically been marked by periods of tension interspersed with cautious engagement, heavily influenced by the geopolitical strategies of major powers, particularly the United States. The presidency of Donald Trump introduced an unconventional and highly personalized approach to diplomacy with North Korea. As discussions emerge about a potential second Trump term, it is crucial to critically analyze how such a scenario could impact the delicate balance of inter-Korean relations.

During his first term, Trump’s North Korea policy oscillated between extreme hostility and unprecedented engagement. Initially, Trump’s administration adopted a “maximum pressure” strategy, characterized by intensified sanctions and military posturing. This approach culminated in a series of provocative exchanges with North Korean leader Kim Jong Un, raising fears of potential military conflict.

However, this aggressive stance shifted dramatically with the onset of direct diplomacy. Trump’s willingness to meet Kim face-to-face, beginning with the historic 2018 Singapore Summit, marked a departure from traditional diplomatic protocols. While these summits were high on symbolism, they yielded little in terms of concrete denuclearization agreements. Critics argue that these meetings, while lowering immediate tensions, lacked the necessary groundwork and follow-through to achieve lasting progress.

A second Trump term could see a return to the personalized diplomacy that defined his initial engagement with North Korea. Trump's emphasis on leader-to-leader communication might bypass conventional diplomatic channels and processes. While this approach could potentially restart stalled talks, it risks reinforcing the narrative of North Korea's leadership seeking validation through direct engagement with the U.S. president, thereby sidelining South Korea’s role in inter-Korean affairs.

This focus on high-level summits could either stabilize or destabilize inter-Korean relations, depending on the outcome. Successful talks might lead to reduced tensions and incremental steps toward peace. Conversely, failure to achieve substantive agreements could lead to a resurgence of hostilities and mistrust, potentially isolating South Korea.

North Korea’s strategic calculations are crucial in assessing the potential impact of a second Trump term on inter-Korean relations. Kim Jong Un’s regime has shown a preference for direct engagement with the U.S. president, which offers opportunities to elevate North Korea's international standing and negotiate from a position of strength. In a second Trump term, Pyongyang might aim to exploit Trump's preference for high-stakes diplomacy to secure concessions, such as sanctions relief, without making substantial compromises on its nuclear arsenal.

North Korea may also perceive Trump's transactional approach as an opening to drive a wedge between the U.S. and South Korea, thereby weakening the South Korea-U.S. alliance and gaining leverage in inter-Korean negotiations. Pyongyang's calculation would likely include a mix of provocations and diplomatic overtures to test and influence U.S. responses, seeking to maximize its strategic gains while minimizing the risk of renewed hostilities.

South Korea’s position in inter-Korean relations is inherently tied to its alliance with the United States. A second Trump term could introduce uncertainties regarding the U.S. commitment to the alliance. Trump’s past criticisms of South Korea’s financial contributions to the U.S. military presence and his transactional view of alliances could strain South Korea-U.S. relations. This strain might compel South Korea to seek greater autonomy in its North Korea policy, potentially leading to friction between Seoul and Washington.

Moreover, if Trump prioritizes direct engagement with North Korea at the expense of coordinating with South Korea, it could undermine the inter-Korean dialogue process. South Korea’s president may find it challenging to balance the expectations of North Korea, the United States, and domestic political pressures, thereby complicating efforts to achieve a unified approach towards peace and denuclearization.

Economic cooperation and humanitarian aid are pivotal aspects of inter-Korean relations. Trump’s administration, focused on sanctions and pressure, limited South Korea’s ability to engage economically with the North. A continuation of this policy could hinder South Korea's initiatives aimed at fostering economic interdependence and humanitarian exchanges.

However, a second Trump term might also witness strategic shifts if Trump perceives economic engagement as a means to achieve broader geopolitical goals. For instance, Trump might conditionally ease sanctions to incentivize North Korea’s compliance with denuclearization, potentially opening avenues for inter-Korean economic projects. Nevertheless, this approach carries risks, as premature easing of sanctions without verifiable steps toward denuclearization could embolden North Korea while failing to achieve lasting security.

Inter-Korean relations are intrinsically linked to broader regional dynamics involving China, Japan, and Russia. Trump's erratic foreign policy and trade tensions with China could complicate these relationships further. China’s influence over North Korea is a critical factor; a confrontational China-U.S. relationship might push Beijing to strengthen its support for Pyongyang, thereby complicating U.S. and South Korean efforts to manage North Korean provocations.

A second Trump term could also affect the United States’ stance toward international organizations and multilateral agreements, potentially isolating the U.S. on the global stage. This isolation could weaken collective international efforts to address the North Korean issue, thereby placing greater pressure on inter-Korean relations.

A second Trump term presents a complex and multifaceted challenge to inter-Korean relations. While Trump's unconventional diplomacy could potentially break deadlocks, the risks associated with his unpredictable approach and possible sidelining of South Korea's strategic interests could destabilize the region. North Korea's strategic calculations, aimed at leveraging Trump's diplomatic style to gain concessions and weaken the South Korea-U.S. alliance, will be critical in shaping the trajectory of inter-Korean relations. South Korea will need diplomatic acumen to navigate this uncertain landscape, balancing engagement with North Korea, maintaining a robust alliance with the United States, and managing regional dynamics to achieve sustainable peace and stability on the Korean Peninsula.

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The Authors

Jihoon Yu is a research fellow at the Korea Institute for Defense Analyses. Jihoon was the member of Task Force for South Korea’s light aircraft carrier project and Jangbogo-III submarine project. He is the main author of the ROK Navy’s Navy Vision 2045. His area of expertise includes the ROK-U.S. alliance, the ROK-Europe security cooperation, national security, maritime security, hybrid-threats, and strategic weapons systems. He earned his MA in National Security Affairs from the U.S. Naval Postgraduate School and Ph.D. in Political Science from Syracuse University.

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