A fragile but significant thaw in relations between Japan and South Korea is underway, even as both nations navigate complex geopolitical pressures and internal political dynamics. The current moment presents a unique opportunity for cooperation, but also carries the risk of renewed tensions, particularly in light of China’s growing assertiveness in the region.
A History of Discord
The relationship between Japan and South Korea has been historically fraught with difficulty, stemming from Japan’s colonial past in Korea. Tensions escalated in 2018 when Tokyo reported a South Korean warship locking its radar on a Japanese patrol plane, followed by a tit-for-tat escalation involving export controls and intelligence sharing in 2019. A period of rapprochement began in 2022, allowing the two U.S. allies to present a more unified front against China.
China’s Influence and Regional Concerns
China’s increasing influence in the region is a key factor driving the need for closer ties between Japan and South Korea. In November, Beijing responded to remarks by Japanese Prime Minister Sanae Takaichi—regarding potential Japanese military involvement in a conflict over Taiwan—with economic pressure tactics, including suspending seafood imports and discouraging tourism. This mirrors a similar campaign waged against South Korea in 2016-17 after Seoul agreed to host the U.S. THAAD missile defense system.
Alongside China’s pressure, both nations face uncertainty regarding U.S. commitments and a strengthening alliance between China, North Korea, and Russia. These factors underscore the importance of a strong partnership between Tokyo and Seoul.
An Unlikely Alliance
The current leaders of Japan and South Korea, Prime Minister Takaichi and President Lee Jae-myung, represent opposing political ideologies. Takaichi, from the right wing of Japan’s Liberal Democratic Party, is seen as less willing to address South Korea’s concerns regarding historical injustices. Lee, a progressive, traditionally favors engagement with North Korea and closer ties with Beijing.
Despite these differences, analysts suggest this pairing could be uniquely positioned to break the cycle of disruption that has plagued the Japanese-South Korean relationship. Their unexpected collaboration could lead to a lasting basis of cooperation, akin to “Nixon going to China.”
Navigating Historical Grievances
Deep-seated mistrust stemming from Japan’s colonial legacy continues to complicate relations. Disputes over apologies and compensation for “comfort women” and forced labor have repeatedly stalled diplomatic progress. South Korean court rulings challenging a 1965 bilateral settlement of historical claims have further exacerbated tensions. Previous attempts at reconciliation, such as the 2015 compensation package signed by Park Geun-hye and Abe, were later discredited by the progressive Moon Jae-in administration.
Frequently Asked Questions
What prompted the recent improvement in Japan-South Korea relations?
A substantive but fragile rapprochement began in 2022, allowing the two U.S. allies to engage a powerful and assertive Beijing in a two-against-one dynamic.
How is China responding to closer ties between Japan and South Korea?
In November, Beijing launched a pressure campaign against Japan, suspending seafood imports and advising citizens against traveling to Japan, in response to remarks suggesting potential Japanese military involvement regarding Taiwan.
What challenges remain for Japan and South Korea in strengthening their partnership?
Deep-seated mistrust stemming from Japan’s colonial legacy, differing political ideologies of the current leaders, and the potential for diplomatic contingencies, such as disputes over contested islands, remain significant challenges.
Will Takaichi and Lee be able to overcome these obstacles and forge a lasting partnership? The answer remains to be seen, but the current geopolitical landscape suggests that cooperation between Tokyo and Seoul is more critical than ever.