Overarching Diplomatic Philosophy: “Pragmatic Diplomacy”

The core tenet of the Lee Jae-myung administration’s foreign policy is “pragmatic diplomacy” centered on national interests. This approach aims to strike a balance between maintaining key alliances and pursuing economic benefits, rejecting an ideological or bloc-centric foreign policy. The goal is to maximize South Korea’s national interest in a volatile geopolitical environment marked by intensifying U.S.-China competition.

The alliance with the U.S. remains the cornerstone of South Korean foreign policy. However, Lee’s pragmatic approach is expected to lead to a more assertive stance on issues like trade deficits and defense cost-sharing. The administration is likely to seek to modernize the alliance, extending its scope beyond traditional security to areas like technology and economic cooperation, while also navigating potential friction with a transactional “America First” agenda. There may be discussions about the potential for U.S. forces in Korea to take on a broader regional role.

While Lee has previously been accused of being too close to North Korea, his government is expected to adopt a more cautious and calibrated approach than some of his predecessors. While seeking to reopen dialogue and communication channels, the administration is unlikely to pursue drastic or immediate steps toward denuclearization. The focus will be on a sustainable policy that can withstand partisan fluctuations, and any engagement will be carefully balanced with national security and defense capabilities.

Lee administration has shown a surprising willingness to improve relations with Japan, signaling a pivot from a focus on historical disputes to one of pragmatic cooperation. The August 2025 summit with Japanese Prime Minister Shigeru Ishiba was a significant breakthrough, with both leaders affirming their “inseparable” relationship. This new approach seems to be driven by a clear-eyed assessment of the need for trilateral cooperation with the U.S. to address North Korean threats and other regional challenges.

Lee’s government aims to improve relations with China, which is South Korea’s largest trading partner. Unlike his predecessor, Lee believes that a strong alliance with the U.S. should not come at the cost of a deteriorating relationship with China. He will likely seek to increase economic and cultural cooperation with Beijing, while being mindful of the need to avoid being seen as overly accommodating due to China’s unpopularity with the South Korean public.

Lee administration envisions South Korea as a “global leading state” and a “middle power” that can actively contribute to regional cooperation and international solidarity. This involves diversifying partnerships with countries in Southeast Asia and Europe, and leveraging South Korea’s strengths in technology and industry to address global challenges.

Lee’s government has initiated a reassessment of South Korea’s foreign aid programs, potentially re-routing funds to support cultural influence (the “Korean wave”) and other national interests. This shift from traditional humanitarian aid priorities is part of the broader focus on pragmatic diplomacy.

 

The success of Lee’s diplomatic agenda will depend on its ability to navigate several key challenges:

Navigating Great Power Competition: The central challenge is to maintain a strong alliance with the U.S. while avoiding an outright confrontation with China. The administration will need to perform a delicate balancing act, as pressures from both sides are likely to intensify.

Domestic Politics: Deeply rooted political divides in South Korea, as well as ongoing legal challenges and a polarized society, could impact the government’s ability to implement its foreign policy vision consistently.

The Trump Factor: With Donald Trump’s return to the U.S. presidency, the alliance faces an unpredictable test. The transactional nature of his “America First” agenda, including potential demands for increased defense spending and changes to trade relations, will require deft negotiation from the Lee administration.