A Strategic Assessment of the Next U.S.-North Korea Summit: Regional Interests and Conditions for an Initial Agreement​

Sung-Yoon LEE

sylee@sejong.org

Principal Research Fellow

Sejong Institute

1. The Central Question is What a Summit Can Deliver

A summit, a temporary testing moratorium, and verified limits on nuclear-material production are different achievements with different requirements. They should neither be conflated nor presented as successive steps that will follow automatically. Broader freezes, reductions, and eventual denuclearization remain long-term objectives, but each requires additional agreements and political conditions that an initial settlement cannot guarantee.

The negotiating environment has changed substantially since the 2018 Singapore summit and the unsuccessful 2019 Hanoi summit. North Korea has diversified its nuclear forces, improved delivery systems, and intensified its hostile posture toward the South. Its designation of inter-Korean relations as those between two hostile states accompanies a military buildup increasingly relevant to theater operations. Meanwhile, cooperation with Russia and China has expanded Pyongyang’s alternatives to an agreement with Washington. The relevant comparison is therefore not between a bargain and continued isolation, but between a bargain and North Korea’s ability to sustain its weapons programs while retaining those external relationships.

President Trump’s interest in personal diplomacy with Kim Jong Un creates an opportunity to reopen contact. President Lee Jae Myung’s government can help facilitate that process. But the political conditions for a meeting are less demanding than those for restricting nuclear capabilities. Pyongyang could welcome the status and publicity of a summit while rejecting the obligations necessary for a meaningful nuclear agreement. Personal rapport may open negotiations; it cannot replace agreed definitions, verification arrangements, or substantive compensation.

For negotiating purposes, this brief distinguishes a cessation of activity from a freeze. A cessation means stopping a specified activity. A freeze means maintaining an agreed limit on an activity or capability, with arrangements to establish compliance. A testing moratorium can often be monitored through external observation, whereas confidence in a production freeze generally requires negotiated information, access, and continuing monitoring. These are practical distinctions for designing an agreement, rather than judgments about the wording of government speeches.

An interim freeze need not abandon denuclearization. It can slow the growth of North Korea’s capabilities while preserving the possibility of further negotiations. Its value must nevertheless be measured by what it actually restricts. Suspending tests does not necessarily stop fissile-material production or warhead assembly. Closing one facility does not cap nationwide production. A limited agreement should therefore be judged on its own verified benefits, remaining risks, and continuing costs, without assuming that later disarmament will justify concessions made today.

South Korea should pursue two objectives together: delaying the growth of the North Korean threat and maintaining defense capabilities commensurate with the threat that remains. Dialogue has value even when its immediate results are modest. But if a bargain weakens allied defense more than it reduces the threat, its terms require revision.

2. A Stronger North Korea and a Less Favorable Enforcement Environment

The nuclear problem now extends far beyond the operating status of a few facilities. It encompasses fissile-material production, existing stocks, new warheads, increasingly diverse delivery systems, and the interaction of these capabilities. Uncertainty about total inventories does not diminish the need to address continued growth. It does, however, require restraint in describing what a limited agreement could accomplish.

The distinction between threats to the United States and threats to its allies is particularly important. ICBMs capable of reaching the American homeland are connected to, but are not identical negotiating subjects to, the shorter-range systems threatening South Korea and Japan. Limits on ICBM testing could offer Washington a direct benefit while leaving substantial regional capabilities untouched. Ballistic missiles, nuclear-capable cruise missiles, and sea-based systems also pose different problems for restrictions on testing, production, and deployment. A moratorium can constrain performance validation without eliminating weapons already fielded.

The initial agreement cannot realistically resolve every threat. It should identify precisely what is covered, what is excluded, and how regional systems will be addressed in subsequent discussions. Seoul should seek a credible route for those discussions without representing a future agenda as an obligation that Pyongyang has already accepted.

Past negotiations offer useful but limited precedents. After the 1994 Agreed Framework, the IAEA monitored a freeze at Yongbyon; in 2007, it returned to verify and monitor a shutdown there. These experiences demonstrate that North Korea has accepted restricted verification under particular conditions. They do not establish its present willingness to do so, and neither amounted to a complete accounting of all past nuclear activities or materials. Energy assistance, prospects for improved relations, and a multilateral negotiating structure supported those arrangements. Chinese and Russian cooperation cannot now be assumed to operate at comparable levels. 

Russia’s war in Ukraine has increased North Korea’s strategic value as a supplier of weapons and personnel. Material support, financial benefits, and combat experience expand Pyongyang’s options and may raise the price it demands for nuclear restrictions. If that price exceeds what Washington and its allies can offer, no substantive agreement may be available. The duration and scale of Russian support remain uncertain, but uncertainty alone does not prove that North Korea needs a U.S. bargain. The question is whether it values the additional benefits of such a bargain sufficiently.

Russia’s 2024 veto of the extension of the UN sanctions Panel of Experts, with China abstaining, weakened independent monitoring and public reporting. It did not repeal existing Security Council sanctions. Financial restrictions, export controls, shipping risks, and national sanctions continue to impose costs, although their effectiveness varies. Neither the assumption of unified international enforcement nor the claim that sanctions have become wholly irrelevant provides a sound basis for policy.

Comparative cases likewise caution against treating technical solutions as substitutes for political incentives. South Africa’s dismantlement of an existing arsenal differed from Libya’s abandonment of its development program. U.S. relations with India, Pakistan, and Israel arose from distinct strategic circumstances; improved relations did not necessarily require nuclear disarmament or confer recognition as a nuclear-weapon state under the Non-Proliferation Treaty. Libya’s subsequent regime collapse may deepen Pyongyang’s distrust of assurances, but does not establish a simple causal rule linking disarmament to regime collapse. The practical lesson is to examine North Korea’s reasons for accepting a particular restriction and the credibility of the proposed return.

3. Where the Interests of the Six Countries Converge and Diverge

The United States seeks reduced homeland risk, a diplomatic achievement, and credible alliances, but may assign these objectives different priorities. An administration seeking a rapid breakthrough could accept a meeting or testing restraint that North Korea can provide at relatively low cost. The marginal benefit matters: reaffirming an existing pause is worth less than adding meaningful restrictions on test categories or duration. Excessive payment for a modest moratorium would also consume leverage needed for production limits. 

Washington must distinguish benefits it can announce from those it can legally and practically provide. A promise that never produces licenses, payments, or shipments offers Pyongyang little incentive to comply. Conversely, a deal that leaves regional threats intact while weakening allied capabilities could increase rearmament pressures and undermine confidence in U.S. commitments. Preserving the alliances is therefore part of sustaining a U.S. agreement, not simply an additional demand imposed by allies.

North Korea evaluates preservation of its arsenal, improved relations, economic benefits, and reductions in allied military activity as separate gains. A summit alone provides recognition and propaganda value without necessarily requiring a weapons concession. A substantive bargain is harder: Pyongyang must weigh additional benefits against lost production opportunities, military information exposed through verification, constraints on restarting activity, and the risk that American promises will not endure.

The cost of a test moratorium depends on timing, scope, and exceptions. If essential testing is complete or the next test is not imminent, a temporary pause may carry limited opportunity costs. If further validation is urgent, the same restriction becomes more expensive. Production limits add a different cost by forgoing future material. Facilities that contribute little or are easily replaced may be easier to offer, but their closure could also yield less security value. Managed access might reduce exposure of unrelated military information, provided it does not exclude the minimum information required to establish compliance.

Renewable licenses preserve U.S. control but may appear unreliable to Pyongyang. Short implementation cycles that pair restrictions with actual benefits can reduce that problem, though they may not satisfy demands for broad financial normalization or fundamental alliance concessions. Negotiators should therefore look for observable evidence of willingness to discuss named facilities, operational information, and continuous monitoring. Agreement to discuss contact arrangements or a test moratorium is not evidence of willingness to accept a production freeze.

South Korea bears the immediate regional threat without controlling the full U.S.–North Korea agenda. A summit could ease tensions and create opportunities for inter-Korean contact, but might also reinforce Seoul’s exclusion from decisions affecting its security. South Korea should prioritize consultation on military posture and peace arrangements over attendance at every meeting. Verified production restraints could buy time; an ICBM-centered bargain purchased through weaker combined defense could widen the gap between the threat Seoul faces and its ability to respond.

Japan shares concerns about regional missiles but has distinct priorities involving abducted Japanese citizens, normalization of relations with Pyongyang, and national defense. Seoul cannot assume that Tokyo will endorse the same sequence or pace of concessions. It should explain how verified production limits and negotiations on regional missiles could reduce Japan’s defense burden, while allowing Japan–North Korea contacts and the nuclear negotiations to proceed in parallel. Coordination should prevent regional threats from disappearing from the agenda without requiring identical positions on every political issue.

China prioritizes border stability, influence over North Korea, and the U.S. regional military presence. Support for denuclearization in principle does not necessarily translate into willingness to impose costs on Pyongyang. Beijing could welcome reduced tensions while seeking a role in the process. Clearly authorized trade might benefit Chinese firms, but implementation would still depend on actual Chinese decisions. Trade and assistance that improve North Korea’s alternatives can also reduce the relative value of U.S. relief.

Russia’s priorities are shaped by wartime procurement and the advantages of dispersing Western attention and resources. Moscow need not oppose a summit that lowers pressure on North Korea without disrupting their cooperation. Restrictions on weapons transfers or related finance, however, would conflict more directly with Russian interests. Monitoring and interdicting prohibited transfers should therefore remain a separate enforcement effort rather than depend on Russian cooperation with an initial nuclear agreement.

These differences leave greater common ground for contact and crisis management than for verified production restraints. They also explain why supporting talks, financing reciprocal projects, and adjusting military posture must remain separate decisions for South Korea.

4. Building a Conditional Bargain that Can Actually be Implemented

American sanctions and military power can impose costs, but neither guarantees North Korean declarations or inspections. Sanctions enforcement against illicit finance, procurement, and prohibited trade remains useful, with effects varying according to evasion and Chinese and Russian support. Deterrence should protect against military coercion; threatening war to compel negotiations could instead increase escalation risks borne disproportionately by South Korea.

The United States also possesses benefits that China and Russia cannot fully substitute: a direct political relationship, permanent communication channels, a statement of non-hostile intent, and a longer-term prospect of normalization. These can be combined with lawful economic measures. But a political statement is not a legally binding security guarantee, and diplomatic normalization does not automatically normalize banking or commerce.

“Sanctions relief” is not a single instrument. U.S. executive measures, statutory restrictions, transaction licenses, export controls, and Security Council measures involve different authorities and conditions. A particular OFAC license does not remove restrictions under other laws or UN resolutions. Some statutory measures allow waivers or suspension under specified conditions; others impose reporting or substantive requirements. Changes to UN measures require their own procedures and cannot be guaranteed by Washington alone.

Any proposed economic benefit should identify the competent authority, eligible firms and goods, financial ceiling, duration, and routes for payment, insurance, and delivery. Banks may decline even authorized transactions. Diversion risks and domestic budget constraints also matter. South Korean and Japanese contributions can be promised only within their own legal powers and international obligations. Humanitarian assistance should be assessed separately according to civilian need and the feasibility of delivery; an existing humanitarian exemption should not be repackaged as new commercial relief.

The resulting approach is conditional rather than a timetable for inevitable progress. At each stage, the parties must establish that the restriction has sufficient value, the compensation is deliverable, and verification is adequate for the claim being made. If those conditions are absent, retaining contact without a nuclear agreement may be preferable to forcing an unfavorable bargain.

Initial contact and testing restraint

A realistic summit objective is to establish communication, clarify non-hostile intentions, designate working-level representatives, and agree on subsequent discussions. A temporary moratorium might cover specified nuclear or missile tests, with clear categories, duration, exceptions, and procedures for explaining suspected violations. External monitoring can support assessment of observable tests. Exchanges should initially emphasize political measures, with narrowly defined economic permissions considered individually where lawful and justified.

Technical meetings within 60–90 days could be proposed, without treating that interval as a forecast or a reason automatically to terminate dialogue if meetings slip. Delays should be investigated and responses calibrated. A summit that produces only renewed contact has diplomatic value but should not be described as reducing production. If Pyongyang makes formal nuclear recognition or fundamental alliance retrenchment a precondition that Washington cannot accept, even a meeting may not occur.

A limited production agreement

A facility-specific bargain becomes credible only when North Korea is willing to negotiate the covered facility, activity, period, operational information, access, and continuing monitoring. One visit does not establish a sustained freeze. Initial access, an agreed operating baseline, and continuous monitoring can provide milestones for phased licenses or projects. The size of those benefits must reflect the production and information costs imposed; small permissions cannot simply be assumed to purchase a long shutdown of a central facility.

A freeze at one site would leave questions about undeclared facilities, alternative production, existing material stocks, and further warhead assembly. Its benefits should be described accordingly.

Review and expansion procedures are desirable, but including broader declarations on a future agenda does not mean North Korea has accepted a binding deadline to provide them.

If access is interrupted or agreed information withheld, the parties should establish the facts, invoke dispute procedures, and consider suspending new payments or license renewals. Benefits already delivered cannot necessarily be recovered. Communication and safety arrangements should be preserved where possible so a verification dispute does not destroy every channel of crisis management.

Wider restrictions and long-term objectives

Broader production limits would require additional declarations, monitoring continuity, attention to transfers among facilities, and procedures to resolve discrepancies. IAEA participation would depend on North Korean consent and appropriate authority, resources, and arrangements; earlier safeguards cannot simply be assumed to resume. Warhead and inventory verification introduces separate technical and safety issues that cannot be handled as an extension of monitoring facility operations.

Expanded obligations could justify larger economic and diplomatic benefits, subject to the relevant legal approvals. Partial access would not justify ending the entire sanctions regime. If a limited agreement remains in compliance while wider talks stall, the parties should compare its continuing benefits and costs and negotiate renewal. Failure to advance is not identical to breach. Likewise, measures Washington can re-impose under its own authority should be distinguished from measures requiring a new Security Council decision; automatic UN restoration cannot be assumed.

Reductions in existing material and warheads, and eventual denuclearization, would require a further strategic decision by Pyongyang. They should remain objectives rather than baseline expectations for the next summit. Nuclear agreements, diplomatic normalization, and replacement of the armistice involve distinct legal processes and participants. None follows automatically from another.

5. South Korea’s criteria for an acceptable outcome

Seoul should first reject exchanges that reduce a narrow threat to the American homeland while weakening essential combined-defense functions against the threat that remains. The problem is not an ICBM moratorium itself, but an unfavorable balance between threat reduction and lost defensive capacity. U.S. troop withdrawal or suspension of alliance military cooperation would be disproportionate compensation for narrowly verified testing restraint. Limited changes to exercises or deployments may be considered separately, provided they preserve essential command and control, operational proficiency, reinforcement capability, and a credible restoration procedure.

South Korea should explain these concerns in terms of agreement durability. If regional threats grow, both allied defense burdens and pressure for additional armaments rise, making an ostensibly successful U.S. agreement harder to sustain. Flexibility on political and economic measures should therefore be accompanied by a separate assessment of military costs, compensating arrangements, duration, review intervals, and the conditions for restoring the original posture.

Second, Seoul should avoid large, prolonged rewards paid before corresponding obligations can be confirmed. Compensation for a testing pause should differ from compensation for sustained facility access and verified production restraint. Time-limited permissions and phased projects preserve the ability to withhold new benefits if implementation fails. Monitoring should address transparency and military diversion, while humanitarian decisions remain grounded in civilian need rather than being used to disguise broad economic concessions.

Third, South Korea must protect its authority over decisions directly involving its forces, territory, or legal obligations. It need not insist on attending every U.S.–North Korea discussion. It does need consultation and participation commensurate with its responsibilities when military posture or a peace arrangement is at issue. A political end-of-war declaration, amendment or replacement of the armistice, and the legal basis for U.S. Forces are distinct matters. Treating them as a single gesture would obscure who has authority to decide and implement each measure.

A standing interagency expert group should translate these principles into executable proposals. Diplomacy, unification, defense, intelligence, nuclear, and sanctions specialists should record the North Korean obligation, verification authority and milestone, legal basis and delivery channel for compensation, South Korea’s contribution, residual threat, and renewal or suspension conditions. This common document could support alliance consultations and domestic coordination while making technical uncertainties explicit. Seoul should seek advance consultation on joint statements without implying an unlimited right to approve every American negotiating text.

Military readiness must be assessed by the ability to carry out assigned missions, not simply by exercise size. Command-post practice, combined operations, logistics and ammunition stocks, warning and missile defense, and reinforcement planning all require attention. Relevant commanders should inform decisions on military adjustments. Stronger South Korean capabilities also reduce pressure to accept an unfavorable bargain merely to secure diplomatic momentum.

Seoul and Tokyo should coordinate their acceptable interim outcomes before specifying a shared missile agenda. Discussions should cover missile categories, test definitions, and warning and tracking cooperation, while respecting Japan’s abduction and normalization concerns. With China, diplomacy should emphasize specific, observable cooperation on prohibited goods, finance, border safety, and crisis communication. With Russia, necessary diplomatic contact should accompany evidence-based monitoring and enforcement against prohibited military transfers. Confirmed transfers and combat experience should be distinguished from unverified claims of technology assistance.

Implementation should be evaluated both inside and outside the agreement. Indicators include working-level meetings, access and monitoring continuity, covered facilities’ operating status, regional missile activity, and North Korea–Russia military transfers. Changes in the threat should be compared with the quality of combined training and reinforcement and logistics preparedness. Compliance with a narrow moratorium can coexist with growth elsewhere in the arsenal. Public explanations should therefore distinguish established gains from residual risks and unresolved uncertainty.

If a summit fails or does not occur, South Korea should preserve readiness and opportunities for renewed contact without equating diplomatic failure with improved security. If a limited agreement holds, it should assess that agreement on its merits even when wider talks stall. Where Seoul lacks authority to stop a U.S. decision, it should respond through alliance consultation and military preparation; where its own consent, budget, or permits are required, it should specify conditions for participation.

The best course is to use verified limits as a realistic intermediate objective while preserving deterrence and opportunities for broader restraint. North Korea’s stronger position does not make every bargain worthless, but it may make some bargains unavailable. The purpose is neither to inflate expectations nor to dismiss modest achievements. It is to exchange proportionate benefits for demonstrable restraint, protect allied defense against remaining threats, and ensure that diplomacy strengthens South Korea’s security in practice.