Analysis-South Korea's presidential election set to reshape policies for key U.S. ally

South Korean liberal candidate Lee Jae-myung is projected to win next week's snap presidential election, potentially shifting Seoul's foreign policy. While Lee has expressed skepticism about the U.S. alliance and favored engagement with North Korea, he has recently emphasized continued trilateral cooperation with Japan and the U.S., though some analysts remain doubtful about the longevity of this pivot, particularly given potential friction with a second Trump administration regarding trade and defense burden-sharing. Lee's approach to North Korea, including reopening hotlines, faces challenges due to Pyongyang's strengthened military capabilities and rejection of unification.

Analysis

The projected victory of liberal candidate Lee Jae-myung in South Korea's upcoming snap presidential election indicates a potential significant shift in Seoul's foreign policy, diverging from the pro-U.S., hardline North Korea, and Japan-reconciliatory approach of former President Yoon Suk Yeol, who was impeached and removed from office. While Lee Jae-myung, who narrowly lost to Yoon in 2022, has historically expressed skepticism about the U.S. alliance, advocated for engagement with North Korea, and criticized Yoon's rapprochement with Japan, he has recently adopted a more centrist stance, praising the U.S. alliance and affirming continued trilateral cooperation with the U.S. and Japan. However, considerable skepticism remains in Washington, as highlighted by analysts like Bruce Klingner from the Heritage Foundation, regarding the sincerity and durability of this pivot, particularly given Lee's past leanings towards conciliation with China and North Korea, and concerns about future policy consistency. The geopolitical context, marked by China's increased assertiveness, doubts about U.S. commitments, and North Korea's deepened ties with Russia, may constrain Lee's ability to revert to earlier positions. Regarding Japan, Lee vows cooperation on security and technology but is expected to be more critical of concessions made by Yoon and more reactive to historical disputes. Notably, Lee opposes the redeployment of U.S. nuclear weapons or South Korea developing its own arsenal. His potential interactions with a future U.S. administration under Donald Trump are framed by his praise for Trump's negotiating skills, but also by his identification of U.S. protectionism as a challenge and a stated intent not to 'unnecessarily' antagonize China and Russia, which could lead to friction if U.S. demands are perceived as excessive. Lee's plans to re-engage North Korea, including reopening hotlines, face substantial obstacles due to Pyongyang's expanded missile capabilities, its security pact with Russia, and its official rejection of eventual unification with the South.

Key Decisions for Investors

• Investors should closely monitor the outcome of the South Korean election and subsequent foreign policy declarations from a potential Lee Jae-myung administration, particularly concerning relations with the U.S., China, North Korea, and Japan, as these could impact regional stability and market sentiment.
• Assess exposure to South Korean industries sensitive to geopolitical shifts and trade policy changes, such as defense, technology, and major exporters, considering potential adjustments in alliances and the implications of U.S. protectionist measures or changes in trilateral cooperation.
• Factor in heightened geopolitical risk associated with potential changes in Seoul's approach to North Korea, especially given North Korea's current military posture and alliances, and how this might affect the broader security environment in Northeast Asia.