ED Looming Korea-US summit

President Lee Jae Myung and U.S. President Donald Trump / AP-News1

The upcoming summit between President Lee Jae Myung and U.S. President Donald Trump, set to take place in Washington this August, arrives at a critical juncture. While the two leaders are expected to reaffirm the strength of the Korea-U.S. alliance, the context surrounding the meeting signals anything but routine diplomacy. Following a narrowly brokered tariff agreement, Trump is now expected to shift his focus toward pressing security and defense issues — what some in Washington are calling “alliance modernization.” These include increases in Korea’s defense spending, an expanded role for U.S. forces on the peninsula and heightened expectations for Korean involvement in Washington’s Indo-Pacific strategy, particularly in the event of a Taiwan contingency.

At the heart of these developments lies a deeper concern: the unilateral and transactional approach the Trump administration continues to apply, even toward its closest allies. The recent tariff negotiations, in which the United States aggressively leveraged economic pressure to extract trade concessions from Korea, are emblematic of this style. The fear now is that similar tactics will be employed in the national security realm, where the stakes are far higher. Alliances, particularly one as longstanding and vital as that between Seoul and Washington, should not be reduced to a series of demands and obligations. They must be grounded in mutual respect, shared responsibilities and strategic balance.

One particularly troubling development is the growing pressure from the U.S. for Korea to take on a more assertive role in the event of a conflict over Taiwan. According to several reports, Washington has already begun gauging Seoul’s willingness to support a U.S.-led response in the event of a Taiwan Strait crisis. While regional stability and shared democratic values are legitimate concerns, such expectations fail to acknowledge the unique geopolitical vulnerabilities South Korea faces — particularly its delicate relationship with China and its own existential threat from North Korea. Forcing South Korea into a binary geopolitical choice would not only strain bilateral relations but could also further destabilize East Asia.

Additionally, there are concerns that the U.S. will urge Korea to raise its defense spending up to 5 percent of its gross domestic product — far exceeding both current levels and global norms — by, for instance, increasing the amount of direct purchase of U.S. military weapons. Alongside renewed pressure to increase Seoul’s share of stationing costs for U.S. troops, these financial demands threaten to recast the alliance as merely transactional rather than a security partnership. Korea has long contributed generously to joint defense efforts, both financially and operationally. Treating its contributions as insufficient disregards Seoul’s longstanding commitment and undermines alliance solidarity.

Trump’s foreign policy has often been guided by a “pay-to-play” doctrine that sees alliances as business arrangements rather than strategic partnerships. This mindset may deliver short-term domestic gains, but it poses long-term risks. Allies subjected to coercive diplomacy may begin to question the reliability and fairness of the relationship. For Korea, a nation that has consistently upheld its role as a responsible partner in regional and global security, the expectation should not be obedience but genuine collaboration.

As Lee prepares for his first major diplomatic engagement with the United States, his administration must firmly communicate that while Korea remains committed to the alliance, it cannot do so at the cost of national sovereignty or regional stability. Any efforts to modernize the alliance must be guided by a shared understanding of evolving security needs, not unilateral impositions.

For the Korea-U.S. alliance to endure as a pillar of peace and stability in East Asia, the United States must discard its increasingly aggressive negotiation posture and embrace a model of diplomacy anchored in mutual respect and fairness. Only through such an approach can both nations navigate the complex challenges of the 21st century while preserving the strategic trust that has sustained their partnership for decades.