With the New START’s expiration on February 5, 2026, the world has entered a new era in nuclear arms control, reflecting the evolving realities of the contemporary nuclear order. The United States believes that nuclear limits on warheads and launchers imposed under the New START no longer serve its interests, or those of its nuclear adversaries, highlighting Washington’s lack of appetite for a renewed bilateral arrangement. Dr. Christopher Yeaw, the U.S. Assistant Secretary of State for the Bureau of Arms Control and Non-Proliferation, shared the U.S. perspective at the Conference on Disarmament (CD), shifting from exclusive U.S.-Russia strategic constraints toward a more inclusive yet complex multilateral framework that could shape the future of global nuclear stability. This transition shows a broader shift in arms control policy of the U.S., emphasizing the need for a new arms control arrangement that reflects a transition from a bilateral framework to a multilateral charter, holding all five nuclear-weapon states under the Treaty on the Non-Proliferation of Nuclear Weapons (P-5) equally responsible for making serious efforts toward nuclear disarmament.

While addressing the CD, Dr. Yeaw used the shortcomings of the New START to advance a broader strategic argument rather than merely listing Russian violations. By emphasizing Russia’s sizeable stockpile of non-strategic (theatre) nuclear weapons that are estimated to be around 2,000 warheads and the production of novel systems like nuclear-armed Skyfall cruise missile and the nuclear powered Poseidon torpedo, Washington aimed to highlight that New START was overly focused on deployed strategic warheads and completely overlooked the full range of modern nuclear risks.

Dr. Yeaw further linked these loopholes with China’s emergence as a major nuclear actor, arguing that the New START bilateral structure left a structural gap by excluding Beijing at a time of unprecedented expansion in its nuclear arsenal. While projecting on China’s official defense white papers, he cautioned that Beijing could attain strategic parity in the next four to five years and may possess fissile material sufficient for more than 1,000 warheads by 2030, which was roughly 200 at the time the treaty was signed in 2010. Additionally, he highlighted concerns about Russian cooperation on China’s CFR-600 reactors, framing this collaboration as further complicating U.S. threat perceptions. Through these arguments, Washington justifies a shift from a bilateral arms control framework with Russia toward a multilateral platform that includes additional nuclear stakeholders, reflecting a recalibration of the U.S. arms control policy in the contemporary multipolar nuclear landscape.

The U.S. believes that New START’s expiration arrived at the fortuitous time, urging all states, not just the nuclear-weapon states, to strive for a better arms control framework. Under the new proposal, Washington aims to transition from a bilateral arms control agreement with Russia to a multilateral platform as a necessary next step in ongoing arms control discussions. Such a multilateral format can prevent an unmitigated nuclear arms race, restrain the build-up of nuclear arms, and address issues surrounding non-NPT states with nuclear weapons. In a multilateral format, the Trump administration says all options are on the table as it discusses the future of nuclear arms control in the current security environment. Washington wants to conduct negotiations on strategic stability and arms control on multiple avenues, including the P5 forum where NPT-recognized nuclear-weapon states already meet to discuss issues of strategic importance. The Trump administration maintains that all five nuclear-weapon states (P5) are under an obligation to negotiate nuclear disarmament in good faith under Article 6 of the Nuclear Non-Proliferation Treaty (NPT), and that disarmament efforts are not limited to those states with the largest arsenals. Under this new proposal, the U.S. wants nuclear weapon states like Russia and China to participate in a multilateral process for effective debate on the elements of arms control arrangements.

In the evolving multipolar nuclear order, bringing together all five nuclear-weapon states to the NPT – Russia, China, France, the United Kingdom, and the U.S. admits that today’s strategic stability extends beyond Russia-U.S. dynamics. This forum could prove effective in preserving normative commitments under the Nuclear Non-Proliferation Treaty. However, asymmetries in nuclear capabilities and divergent threat perceptions limit the viability of such a multilateral forum. The U.S. and Russia still possess 80 percent of the global nuclear arsenal, while Beijing would resist numerical limits without prior reductions by the U.S. and Russia. France may support such a multilateral dialogue with other P5 states, maintaining its independent nuclear deterrent. However, Paris would likely resist any binding multilateral commitments that could limit its small arsenal. The United Kingdom may support the U.S. initiative for expanding P5 engagement.

The imperative of arms control is encouraging, but given the evolving global nuclear order, where New START failed to achieve its objectives, it is difficult to see how the proposed multilateral, modernized approach might succeed soon. In this scenario, a multilateral forum like the P5 would remain a consultative platform rather than serve as a substitute for enforcing arms control agreements.

In conclusion, after New START’s expiration, the U.S. has moved from bilateral arms control with Russia to a broader multilateral strategy, encouraging all NPT nuclear-weapon states, through forums like the P5, to share responsibility for strategic stability. This favors a more flexible approach to multilateral engagements over the binding bilateral constraints of the past in a changing security environment.

Nawal Nawaz is a researcher at the Centre for International Strategic Studies (CISS) in Islamabad. She is pursuing her MPhil in Strategic Studies at the National Defence University in Islamabad, focusing on nuclear deterrence, arms control, and regional strategic stability.

From Bilateralism to Multilateralism: Washington’s Push for Strategic Stability Through the P5 was originally published on Global Security Review.

Since the beginning of the nuclear age, the international community consistently made efforts toward disarmament. However, the world saw both vertical and horizontal nuclear proliferation. Nuclear-armed states are modernizing their nuclear forces.

Although there are notable breakthroughs in efforts to reach agreements on arms control and disarmament, the world remains far from achieving disarmament goals and is still on a long quest to eliminate nuclear weapons. Nuclear weapons hold a key place in security policy.

The latest report by the Stockholm International Peace Research Institute (SIPRI) says nearly all nuclear-armed states, including the United States, the United Kingdom, France, Russia, China, India, Pakistan, Israel, and North Korea, are modernizing and upgrading their nuclear capabilities. Consequently, a perilous new nuclear arms race is emerging, and reliance on nuclear weapons is increasing. This inevitably raises the question, is nuclear disarmament still logical and relevant?

Signed in July 1968, the Nuclear Non-Proliferation Treaty (NPT), is considered the first major step aimed at preventing nuclear proliferation and ensuring disarmament, including the recognized nuclear powers under the treaty. Article VI of the NPT emphasizes the pursuit of negotiations in good faith to bring an end to the nuclear arms race, achieve nuclear disarmament, and promote general disarmament by nuclear-armed states. Article VI serves as the foundation for global efforts such as the Comprehensive Nuclear Test Ban Treaty (CTBT) and the Treaty on the Prohibition of Nuclear Weapons (TPNW).

However, nuclear weapon states under the NPT are not adequately fulfilling their obligations and commitments under Article VI and instead continue to modernize their nuclear capabilities. They even provide support to their allies on nuclear matters in clear violation of the treaty. The Australia-UK-US (AUKUS) deal and the Nuclear Supplier Group’s waiver to India are cases in point. It is important to note that nuclear weapon states are primarily responsible for progressing disarmament. Under the NPT, the division between nuclear weapons states and non–nuclear weapon states is not supposed to be permanent as all NPT parties will move to non–nuclear weapon states.

The current geopolitical landscape regarding nuclear proliferation, nonproliferation, counter-proliferation, and disarmament indicates a deadlock in the pursuit of a global zero (GZ). Two key terms, conceptualized in this article, may help explain the shortcomings in nuclear disarmament efforts under the grand bargain. The first is the security betrayal trap (SBT), which refers to a situation where security guarantees are betrayed, leaving a country exposed and vulnerable. The second is disarmament deception syndrome (DDS), a pattern of negative consequences resulting from false promises made during the disarmament process.

This situation is exacerbated by the fear of cheating among the nuclear-armed countries, “If we disarm, others might not.” Hence any proactive action would leave some at some disadvantage vis-à-vis adversaries.

The latest SIPRI report suggests that countries are modernizing their nuclear arsenals with a greater reliance on nuclear weapons, which undermines the efforts of arms control and disarmament. The abandonment of bilateral arms control treaties between the United States and Russia, alongside the failure to develop multilateral treaties on the subject, led to a lack of faith in arms control and disarmament.

In South Asia, India’s prestige-driven global ambitions and expansion of its nuclear arsenal beyond a credible minimum deterrent is complicating security dynamics in the region and beyond. This is further worsened by a purported strategic chain with cascading-downward influence on arms control, nuclear risk reduction, crisis management, confidence-building, and strategic stability in South Asia—induced by extra-regional powers. While offering no cascading upward stimuli for bringing regional stability, there are biases and discriminatory norms governing nonproliferation regimes and arms control and disarmament negotiations at the conference on disarmament (CD).

This suggests not only why nuclear disarmament is not happening, but it also explains skepticism over the future of disarmament. For instance, Ukraine presents a novel case of SBT and questions the negative and positive security assurances/guarantees in conventional as well as nuclear terms. The Ukraine paradox cautions other countries, in a DDS, that their survival rests with nuclear weapons of their own. Even confidence in the nuclear umbrella and assurance by treaty allies is eroding. NPT-member states are yearning for nuclear weapons and pose the greatest danger of proliferation.

Ukraine regrets abandoning its inherited nukes in the wake of its ongoing war with Russia. The withdrawal of North Korea from the NPT and the lesson it learned are that nukes are key to national survival. Similarly, Iran’s pursuit of nuclear capability is considered inevitable for the country’s national security. In this geopolitical context, it is hard to make countries believe in any negative as well as positive security in return for disarmament and de-nuclearization.

Disarmament is also unlikely in today’s world due to the changing technological landscape. Countries with advanced technologies and space-based capabilities can still threaten the survival of their enemies.

Emerging technologies are leading to increased conventional imbalances between rivals, which heightens reliance on nuclear weapons for crucial security interests and could, therefore, serve as the ultimate deterrent. Moving toward disarmament requires five actions. First, there is a need for legally binding agreements to address the threats posed by emerging technologies. Second, nuclear powers should not support their allies’ nuclear pursuits. Third, effective multilateral arms control agreements are required. Fourth, it is important to address biases within global frameworks. Finally, confidence-building measures (CBMs) between rivals are needed to resolve long-standing disputes, help prevent arms races, reduce nuclear risks, and build hope for disarmament in the future.

Sher Ali Kakar is an Associate Director of Research with a focus on Nuclear and Strategic Affairs at Balochistan Think Tank Network (BTTN), at BUITEMS Quetta. Atta Ullah is a Research Fellow with a focus on Nuclear and Strategic Affairs at Balochistan Think Tank Network (BTTN), at BUITEMS Quetta. Views expressed in this article are the authors’ own.

Illogic of Nuclear Disarmament in the Contemporary Era was originally published on Global Security Review.