The 11th Review Conference of the Treaty on the Non-Proliferation of Nuclear Weapons (NPT), taking place from April 27 to May 22, 2026 at the UN headquarters in New York, represents one of the most consequential multilateral diplomatic engagements of the decade. At a time when global security is increasingly fragile, arms control frameworks are eroding, and geopolitical rivalries are intensifying, the conference is not merely a routine institutional exercise. It is a critical test of whether the international community can sustain the credibility of the global nuclear order.

The NPT, which entered into force in 1970, has long served as the cornerstone of international efforts to prevent the spread of nuclear weapons, promote disarmament, and facilitate the peaceful use of nuclear energy. With 191 states-parties, it remains one of the most widely adhered-to treaties in the world. However, its legitimacy rests heavily on periodic review conferences, held every five years, where states assess compliance and agree on forward-looking action plans. The failure of the 2015 and 2022 Review Conferences to adopt consensus outcome documents has created what could be  described as a consensus drought. The 2026 conference must reverse this trend or risk undermining the treaty’s foundational authority.

Restoring Credibility to Non-Proliferation Regime

The most immediate importance of the 2026 Review Conference lies in restoring confidence in the NPT process itself. Consensus outcome documents are not merely symbolic; they represent shared commitments and political will among diverse states. The inability to reach agreement in successive conferences has signaled deep fractures within the international system.

Do Hung Viet, president-designate of the conference, has emphasized that another failure would send a profoundly negative signal about the viability of multilateral arms control. In his view, the credibility of the NPT is closely tied to the effectiveness of its review mechanism. Without a tangible outcome, the treaty risks being perceived as a relic of Cold War diplomacy rather than a living instrument capable of addressing contemporary security challenges.

This concern is echoed by NATO, which has reaffirmed the NPT as an “essential cornerstone” of the global non-proliferation architecture. Yet, even as NATO underscores its commitment, it also highlights the deteriorating security environment, pointing to growing proliferation risks and the weakening of arms control norms.

Preventing Renewed Nuclear Arms Race

The timing of the conference is particularly significant. It takes place shortly after the expiration of the New START Treaty expiration 2026, the last remaining bilateral agreement limiting the strategic nuclear arsenals of the United States and Russia. Without legally binding caps, both countries now have the technical capacity to expand and diversify their nuclear forces.

Simultaneously, China is engaged in a rapid modernization and expansion of its nuclear arsenal, raising concerns about strategic stability. NATO has explicitly criticized Beijing’s lack of transparency, while China has countered by accusing the United States of undermining non-proliferation norms through military actions affecting civilian nuclear infrastructure.

These developments create a volatile strategic environment where the absence of formal arms control agreements increases the risk of miscalculation and escalation. In this context, the NPT Review Conference serves as one of the few remaining platforms for dialogue. While it cannot replace bilateral treaties, it can provide political momentum for renewed negotiations and reinforce norms against unchecked nuclear competition.

Navigating Deep Geopolitical Divisions

One of the defining challenges of the 2026 conference is the extent of geopolitical polarization. The ongoing war in Ukraine continues to divide major powers, particularly regarding nuclear safety issues. Similarly, tensions in the Middle East, including strikes on Iranian nuclear sites, have further complicated consensus-building.

The dynamics among the five recognized nuclear-weapon states—United States, Russia, China, France, and the United Kingdom—remain central. Disagreements over disarmament obligations under Article VI of the NPT have intensified, with non-nuclear-weapon states expressing frustration at the perceived lack of progress.

Additionally, contentious issues such as nuclear sharing arrangements, forward deployment of weapons, and the legitimacy of nuclear deterrence doctrines continue to generate debate. NATO, for instance, maintains that its nuclear sharing practices are fully consistent with the NPT and essential for deterrence, while critics argue that such arrangements undermine the spirit of non-proliferation.

These divisions make consensus difficult but also underscore the importance of the conference as a forum for managing disagreements. Without such platforms, tensions could escalate unchecked.

Rebuilding Trust Through Inclusive Diplomacy

A key theme emerging from the lead-up to the conference is the need for more inclusive and pragmatic diplomacy. Ambassador Viet has advocated a listening mode approach, emphasizing the importance of addressing the concerns of non-nuclear-weapon states. These countries, which form the majority of NPT members, often feel marginalized in discussions dominated by nuclear-armed powers.

Inclusive diplomacy involves not only broad participation but also a willingness to engage constructively on contentious issues. Viet has indicated his intention to move away from the “all-or-nothing” negotiating style that contributed to previous failures. Instead, he aims to identify areas of common ground, such as nuclear safety, risk reduction, and the peaceful use of nuclear technology.

This approach is particularly important in bridging the divide between supporters of the NPT and advocates of the Treaty on the Prohibition of Nuclear Weapons (TPNW). While NATO members have rejected efforts to delegitimize nuclear deterrence and maintain that the TPNW does not alter their legal obligations, many non-nuclear states view the ban treaty as a necessary complement to the NPT. Managing this tension will be critical for achieving a balanced outcome.

Addressing Emerging Proliferation Risks

The 2026 Review Conference also takes place against a backdrop of evolving proliferation challenges. Concerns about Iran’s nuclear program have intensified following military strikes and disruptions to international inspections. North Korea’s continued development of nuclear weapons remains an unresolved issue. Meanwhile, technological advancements, including cyber threats to nuclear infrastructure, add new dimensions to the security landscape.

These challenges highlight the need for adaptive and forward-looking policies. The NPT framework must evolve to address not only traditional proliferation risks but also emerging threats that could undermine nuclear security.

Institutions such as the International Atomic Energy Agency play a crucial role in this regard, providing verification and monitoring mechanisms. Strengthening cooperation with such bodies will be essential for maintaining confidence in the peaceful use of nuclear energy.

Human Dimension of Nuclear Risk

Beyond strategic calculations and diplomatic negotiations, the importance of the NPT Review Conference is rooted in its human implications. The catastrophic consequences of nuclear weapons use are well documented, from the bombings of Hiroshima and Nagasaki to the long-term environmental and health effects of nuclear testing.

By invoking historical memory, including the enduring symbolism of Hiroshima’s Atomic Bomb Dome, diplomats are reminded that nuclear weapons are not abstract instruments of policy but devices of immense destructive power. The failure to strengthen non-proliferation norms increases the risk of their use, whether intentional or accidental.

This human dimension adds urgency to the conference. It underscores that the stakes are not limited to state security but extend to global survival.

Role of Process and Leadership

The procedural approach adopted for the 2026 conference may significantly influence its outcome. Ambassador Viet has proposed introducing a draft outcome document early in the negotiation process, allowing more time for substantive discussions. This contrasts with previous conferences, where last-minute negotiations often led to deadlock.

Such procedural innovations, while modest, could help facilitate consensus by providing a clearer framework for negotiations. Effective leadership will also be crucial in managing divergent interests and maintaining momentum.

Sustaining a Fragile Architecture

The 11th NPT Review Conference is a pivotal moment for the global nuclear order. Its importance lies not only in the specific outcomes it may produce but also in what it represents: a test of the international community’s ability to cooperate in the face of shared existential risks.

Success would reaffirm the relevance of the NPT, strengthen norms against proliferation, and provide a foundation for future arms control efforts. Failure, by contrast, would deepen existing divisions, weaken the treaty’s credibility, and increase the likelihood of a renewed nuclear arms race.

In an era marked by strategic competition and geopolitical uncertainty, the stakes could not be higher. The conference is not simply about preserving a treaty; it is about sustaining the fragile architecture that underpins global security.

(The author is a policy professional in international relations and trade policy, formerly associated with the Ministry of External Affairs (Policy Planning & Research Division) and the Ministry of Heavy Industries, Government of India. Views expressed are personal. He can be reached at @Nicholeballawar (https://x.com/Nicholeballawar)