Beyond the Denuclearization–Engagement Binary
South Korea’s diplomacy toward North Korea has long been trapped between two familiar but insufficient choices. One is a principled but often unrealistic insistence on immediate denuclearization. The other is an engagement-oriented approach that is easily criticized as naïve or overly concessive. The Lee Jae-myung administration’s emerging foreign policy should be understood as an attempt to move beyond this binary. Its central logic is neither appeasement nor resignation. It is a pragmatic effort to manage risk and reopen a political pathway toward peace under far more difficult strategic conditions.
The Korean Peninsula today is not the same diplomatic environment that existed during earlier periods of inter-Korean engagement. North Korea has significantly advanced its nuclear and missile capabilities. Inter-Korean communication channels remain weak. Pyongyang has increasingly framed South Korea not as a counterpart in a special national relationship but as a hostile state. At the same time, intensifying U.S.-China competition and the growing strategic alignment among North Korea, China, and Russia have made the Korean Peninsula part of a broader geopolitical confrontation.
Under these conditions, simply repeating the language of past denuclearization diplomacy is unlikely to produce meaningful results. This is why the Lee administration’s emphasis on a pragmatic approach deserves attention. The point is not to abandon the long-term goal of denuclearization. Rather, it is to rethink the sequence through which denuclearization could become more realistic. A diplomacy that demands everything at once may sound morally clear, but it can also be strategically empty if it produces no substantial outcomes.
Reopening a Pathway toward Peace
A more realistic approach begins with what can be achieved now. It can freeze further nuclear and missile development, reducing the danger of accidental escalation, restoring channels of communication, and gradually creating the conditions for arms reduction and eventual denuclearization. This approach is not a retreat from denuclearization. It is a way of rescuing denuclearization from diplomatic irrelevance.
The most urgent question is not whether North Korea can be persuaded to surrender its nuclear arsenal tomorrow. It is whether diplomacy can prevent the situation from becoming more dangerous. For instance, if missile testing continues without restraint, the strategic environment will deteriorate further. On the other hand, a freeze would not solve the nuclear problem. But it would slow its escalation and restore a minimal basis for negotiation. In diplomacy, stopping deterioration is often the first condition for future progress.
This logic reflects a broader understanding of peace as a matter of institutional management rather than political symbolism. Peace on the Korean Peninsula cannot be built only through rhetorical commitments. It requires stable mechanisms for crisis communication, military confidence-building, humanitarian cooperation, and predictable diplomatic engagement.
The absence of such mechanisms makes the peninsula vulnerable to miscalculation. Even when neither side intends war, domestic pressure can produce dangerous escalation. A diplomacy of peace must therefore begin with the management of instability.
Critics may argue that recognizing the reality of North Korea’s nuclear capability risks legitimizing it. This concern is understandable. However, effective diplomacy often begins by acknowledging facts one does not approve of. Refusing to recognize North Korea’s nuclear progress does not make any progress. Nor does it strengthen South Korea’s bargaining position. A clear-eyed policy can maintain the normative and legal goal of denuclearization while also addressing the immediate security risks created by North Korea’s existing capabilities. The task is to combine principle with sequencing.
The Realism the Peninsula Requires
This is where deterrence and dialogue should be treated as complements. South Korea must maintain a credible defense posture and the U.S.-ROK alliance, thereby ensuring that North Korea understands the costs of military provocation. But deterrence alone cannot manage every risk. It cannot substitute for communication channels. It cannot clarify intentions during a crisis. It cannot produce arms control, humanitarian cooperation, or political agreements as well. Conversely, dialogue without deterrence lacks credibility.
The Lee administration’s challenge is to integrate these two instruments: deterrence to prevent coercion, and diplomacy to prevent permanent confrontation. The changing regional environment makes this balancing act even more important. The deepening cooperation among North Korea, China, and Russia should not be treated as an unbreakable bloc. Each of these actors has different interests for risk. A South Korean foreign policy should avoid unnecessary over-securitization while preparing for the risks created by their alignment.
This means maintaining the U.S.-ROK alliance as the foundation of national security, but also preserving diplomatic space with China and Russia. Strategic flexibility becomes, therefore, the ability to distinguish between issues, actors, and levels of threat.
The same principle applies to South Korea’s broader foreign policy. Today, security is no longer limited to military affairs. Supply chains, energy security, technological competition, shipbuilding, nuclear energy, digital infrastructure, and economic resilience have all become part of national strategy. A pragmatic policy must therefore connect peace diplomacy with economic security. The Lee administration’s foreign policy can be most persuasive when it presents Korean diplomacy as a comprehensive strategy for national stability.
This broader framing is also politically important. Inter-Korean policy in South Korea has often been absorbed into ideological conflict. Engagement is easily attacked as weakness, while pressure is often presented as seriousness. But this binary has prevented a more mature discussion of what actually works. A serious peace policy should be judged by whether it reduces risk. From this perspective, the Lee administration’s approach can be defended as a policy of disciplined pragmatism.
Such a strategy requires several conditions to succeed. First, engagement with North Korea must be reciprocal and verifiable. This approach should not mean unilateral concessions. Each step should be linked to observable actions. Second, the administration must maintain close coordination with Washington. Any nuclear diplomacy will require U.S. involvement, and South Korea’s credibility depends on alliance coordination. Third, the government must communicate with the South Korean public. Pragmatism can easily be misrepresented as weakness unless the administration explains the importance of managing risk.
Finally, the Lee administration should avoid presenting peace as a dramatic breakthrough. The realistic objective is not an immediate grand bargain, but the gradual reconstruction of diplomatic possibility. On the Korean Peninsula, peace is often made through small steps that prevent large disasters. For instance, restoring channels of communication, reducing military tension, creating humanitarian openings, and freezing further nuclear development may appear modest compared with the ideal of complete denuclearization.
But in the current environment, these steps would be strategically meaningful. The value of Lee Jae-myung’s foreign policy lies in its recognition that diplomacy must begin from the world as it is. North Korea will not be transformed by slogans. The regional order will not become less competitive because South Korea prefers stability. The nuclear problem will not disappear because Seoul repeats established principles. What South Korea can do is to build a sequence through which denuclearization can once again become a realistic goal.
In this sense, Lee’s diplomacy is not a lowering of ambition. It is a reordering of priorities. That may not be dramatic. But it may be precisely the kind of realism the Korean Peninsula now requires.