ED Lee Jae-myung’s 1st diplomatic test

President Lee Jae-myung speaks during a Cabinet meeting held at the presidential office in Yongsan, central Seoul, Thursday. Yonhap

President Lee Jae-myung’s inaugural declaration of a pragmatic foreign policy comes at a time when the global order is in flux. He has pledged to pursue national interest–centered diplomacy rooted in a solid Korea-U.S. alliance, enhanced trilateral cooperation with Japan and a practical, interest-based approach toward China and other neighboring powers. While the emphasis on strategic autonomy and realism appears measured, the success of such diplomacy hinges on clarity, consistency and credibility. Without a coherent strategy and messaging, “pragmatism” risks being perceived as ambiguity — or worse, indecision.

Washington’s response to Lee’s election makes this concern tangible. Although it reaffirmed the bilateral alliance and praised Korea’s democratic transition, the White House also took the unusual step of openly warning against Chinese influence — without issuing a formal congratulatory message. For the first time, the U.S. has explicitly injected a third-party geopolitical concern into its initial comments on a Korean presidential transition. This should not be dismissed as routine. It reflects deep-seated wariness in Washington, particularly under the Trump administration, regarding Seoul’s past overtures to both Beijing and Taipei. Ambiguous statements like “Thanks to China, and thanks to Taiwan” may have played well domestically, but they do not inspire confidence in a capital deeply entrenched in strategic rivalry with Beijing.

To gain the trust of the international community — especially the United States — the Lee administration must urgently clarify its foreign policy stance. Strategic ambiguity may offer short-term flexibility, but in today’s binary geopolitical climate, it often invites suspicion. Seoul must demonstrate, through words and actions, that it is a reliable and principled partner. Establishing strong personal rapport with U.S. leadership — especially U.S. President Donald Trump — should be an early priority. Direct dialogue at the upcoming G7 Summit in Canada or the NATO Summit in the Netherlands could serve as crucial opportunities to build that trust and to present Korea’s position with confidence and coherence.

Economic diplomacy presents an equally formidable challenge. Korean exports to the U.S. have already been hit hard by new tariffs — 10 percent on basic goods, up to 25 percent on cars and parts and 50 percent on steel and aluminum. Trump has hinted at further tariff hikes, and contentious issues like agricultural imports, GMO regulations and data sovereignty remain unresolved. In this environment, retreating from the global stage is not an option. Korea must proactively engage in shaping trade rules rather than reacting to them. Participation in major international forums is not merely symbolic — it is a strategic necessity.

Meanwhile, on the security front, Lee has struck a careful balance — emphasizing military deterrence against North Korea’s provocations while expressing willingness to pursue dialogue for peace. This dual-track approach is theoretically sound, but without consistent messaging and firm execution, it risks appearing incoherent to allies and adversaries alike. Furthermore, with growing discussions in Washington about revising the U.S. troop presence in Korea, Seoul must prepare for frank, principled conversations that assert its core interests while acknowledging alliance responsibilities.

The Center for Strategic and International Studies (CSIS) has rightly observed that Lee may face the most challenging diplomatic landscape since Kim Dae-jung took office amid the 1997 financial crisis. With escalating U.S.-China tensions, tightened export controls, deepening North Korea-Russia cooperation and global conflicts from Ukraine to Gaza, South Korea must navigate a highly complex and volatile international environment.

In this context, pragmatic diplomacy must be more than a rhetorical banner. It requires strategic discipline, policy transparency and reliable partnerships. The Lee administration must communicate its intentions with greater clarity, set firm boundaries and engage proactively with allies — not only to defend national interests but to earn international trust. In diplomacy, perception is power. If Korea wishes to be seen as a capable, consistent and confident actor on the world stage, it must begin by speaking with one voice — and acting with one purpose.