South Korea President Pushes Back Against U.S. Pressure to Shift Military Alliance Away from North Korea Towards Countering China

In advance of his summit with President Trump, South Korean President Lee Jae-myung has expressed reservations about shifting the 71-year-old military alliance between South Korea and the United States from a focus on deterring North Korea to countering China.

While en route to Washington D.C., President Lee hinted at potential challenges during the White House meeting, stating that the proposed change is not easily agreeable.

The U.S. administration has advocated for modernizing the longstanding alliance, formed post-Korean War, with a call for strategic flexibility to deploy troops in response to security threats beyond the Korean Peninsula. The U.S. currently maintains approximately 28,500 troops stationed in South Korea and seeks Seoul’s support, potentially including troop deployment in other countries or regions.

South Korea has historically sent soldiers to aid the U.S. in conflicts such as Vietnam and Iraq, but views North Korea as its primary threat rather than China. The concern lies in becoming embroiled in a conflict with China over issues like Taiwan.

Andrew Yeo, an expert on Asia and U.S.-South Korea relations at the Brookings Institution in Washington D.C., notes that South Korea’s priority is preserving the alliance’s credibility and maintaining defense against North Korea.

President Lee has outlined a range of issues related to North Korea he plans to discuss with President Trump, including the importance of diplomatic engagement. Pyongyang continues to express disinterest in dialogue with either Seoul or Washington.

Ban Kil Joo, an associate professor at the Institute of Foreign Affairs and National Security, a South Korean government-funded think tank, suggests that cooperating with the U.S. on strategic flexibility could strengthen South Korea’s influence over the United States. However, Ban cautions against designating specific countries, such as China, as major threats that the two nations should counteract or oppose.

For several decades, many Asian allies and partners have relied on the U.S. militarily for security while relying on China for markets and trade. President Lee aims to assert autonomy and independence from the global powers, but it remains unclear what options he has other than navigating a delicate balance between them.

President Lee also faces the significant task of transforming a recent verbal agreement and loose framework into a comprehensive trade deal with the U.S. To secure a reduction in U.S. tariffs on South Korean exports from 25% to 15%, South Korea has agreed to invest $350 billion in the U.S. The U.S., however, claims that President Trump will have authority over where these investments are made and will reap 90% of the profits, a claim South Korea’s industry minister has contested as illogical.

Most of the promised $350 billion investment would come in the form of loans and guarantees rather than direct investments. The investments may include a $70 million expansion by South Korean shipbuilder Hanwha Ocean Co. at shipyards in Philadelphia, which President Lee is scheduled to visit during his U.S. trip.

The U.S. aims for South Korea’s investments to revitalize domestic manufacturing and challenge China’s dominance in hi-tech sectors such as semiconductors. Trade tensions are among the reasons that President Lee opted for an atypical itinerary during his visit to the U.S., making Japan his first bilateral destination since 1980.

Historically strained relations between South Korea and Japan due to disputes over history and trade have eased somewhat, allowing for cooperation on current security challenges like North Korea and China. Whereas South Korea and Japan once competed for favor with the U.S., the Trump administration’s approach has prompted the neighbors to collaborate on managing the risks posed by the U.S.

South Korean National Security Advisor Wi Sung-lac explained, “We’ve experienced occasions when the U.S. had to lead the way for trilateral cooperation because the relationship between South Korea and Japan had soured.” This time, however, South Korea and Japan are leading trilateral ties.