ANALYSIS: SIPRI 2026 — THE ERA OF DISARMAMENT IS DEAD AND NOBODY ADMITS IT

Introduction: The numbers nobody wanted to see

June 8, 2026 — SIPRI drops a bomb of figures

On June 8, 2026, the Stockholm International Peace Research Institute published its annual yearbook — the most respected independent assessment of the global nuclear and conventional weapons landscape. The numbers it contained were not surprising to analysts who follow this field. They were stunning to anyone who had allowed themselves to believe that the disarmament architecture built after the Cold War remained functional. 12,187 nuclear warheads in the world. 9,745 in military stockpiles. 2,100 to 2,200 on immediate alert — ready to be launched on minutes' notice. These are not Cold War numbers. They are 2026 numbers. And they exist in a world where every major arms control treaty that previously constrained them has either expired, collapsed, or failed to produce a follow-on agreement.

The SIPRI Yearbook 2026 is not a political document. It is a data document — the product of rigorous research, careful estimation where official data is unavailable, and decades of institutional expertise in tracking weapons programs that states would prefer to keep opaque. Its findings do not prescribe policy. They describe reality. And the reality they describe in 2026 is one that the diplomatic architecture assembled to prevent nuclear proliferation and encourage disarmament has fundamentally failed to address. New START expired on February 5, 2026, with no successor agreement in negotiation. The NPT Review Conference ended on May 22, 2026 without a final document — the third consecutive conference to fail. The language of arms control, once a serious component of international diplomacy, has been stripped of its institutional content. The numbers remain. The constraints have gone.

What 12,187 warheads means in human terms

Numbers at this scale resist human comprehension. 12,187 nuclear warheads is not a figure that translates naturally into visceral understanding. So try this: the nuclear weapons on immediate alert — between 2,100 and 2,200 at any given moment — represent, at conservative yield estimates, a combined explosive force equivalent to hundreds of thousands of Hiroshima-class weapons. The 9,745 warheads in active military stockpiles represent the total destructive capacity that the world's nuclear powers are maintaining against each other and against the international order. This capacity exists. It is funded, maintained, modernized, and in some cases being actively expanded. In 2026, in a world that has had decades to reflect on what these weapons represent, their number is not declining. It is stable at best. In several critical cases — notably China — it is growing at rates that the SIPRI Yearbook 2026 describes with clinical precision and that deserve something considerably less clinical in response.

The human meaning of these numbers is not in the abstract count. It is in the specific vulnerability they create for every human being on this planet. A nuclear exchange involving a fraction of the warheads currently on alert would not merely kill the immediate targets. It would disrupt global climate, agriculture, and supply chains at a scale whose consequences — nuclear winter, famine, societal collapse — are modeled but not fully comprehensible to any mind trained in peacetime assumptions. These consequences are not theoretical risks from a distant past. They are the operational reality of the weapons described in the SIPRI Yearbook 2026. And in a world where the arms control architecture that once constrained them has largely dissolved, they are closer to the surface of possibility than they have been at any point since the darkest years of the Cold War.

China's 620 warheads — the fastest growing arsenal

The trajectory that changes everything

China is estimated to possess 620 nuclear warheads as of the SIPRI Yearbook 2026 assessment. This number, and the trajectory that produced it, is arguably the most consequential single data point in the entire yearbook. Not because 620 warheads equals the arsenals of the United States or Russia — it does not, by a factor of roughly 20. But because the growth rate represented by this figure is historically unprecedented for a nuclear power at this stage of its arsenal development. China had approximately 350 warheads in 2022. It had approximately 500 in 2024. It has 620 in 2026. This is an increase of roughly 75% in four years — a pace that, if sustained, would place China's arsenal in the quantitative range of the British and French deterrents combined within a decade, and approaching the deployed US strategic arsenal within two.

The implications of this trajectory are not limited to the quantity of weapons. The quality is equally significant. China's nuclear modernization program — documented in successive US Department of Defense annual reports and reflected in the SIPRI data — involves the development of new delivery systems: the DF-41 and DF-5B intercontinental ballistic missiles, the JL-3 submarine-launched ballistic missile for the Type 094A and future Type 096 ballistic missile submarines, and eventually the H-20 stealth bomber. This triad development — land, sea, and air delivery systems — is the architecture of a strategic nuclear force, not the limited deterrent that China has historically maintained. The move from a minimum deterrent posture to a full strategic triad represents a doctrinal shift of enormous consequence that the SIPRI Yearbook 2026 data makes quantitatively visible for the first time.

What 620 means for deterrence theory

Western nuclear deterrence doctrine has been premised, for decades, on a bilateral US-Russia framework — the two-superpower model in which deterrence stability depends on mutual vulnerability and the logic of mutually assured destruction. The emergence of a genuinely capable third nuclear power — one with 620 warheads and growing, with a full strategic triad under development, and with an explicitly revisionist posture toward the international order — breaks this bilateral framework in ways that existing arms control architecture was not designed to address. A treaty between the United States and Russia that limits their strategic warheads to 1,550 each is strategically meaningless if China is at 620 and climbing, outside any treaty constraint. The New START logic — bilaterally managed reduction toward parity — is structurally incompatible with a world in which three major nuclear powers are on divergent trajectories.

The SIPRI Yearbook 2026 does not offer a solution to this problem. It documents it. The solution — if one exists — requires a multilateral arms control framework that has never existed and that faces fundamental obstacles: China has historically refused to join bilateral US-Russia arms control talks on the grounds that its arsenal is too small to be included; Russia has withdrawn from arms control engagement in the context of its invasion of Ukraine; the United States faces a domestic political environment that complicates ratification of any new treaty that involves verification concessions. These obstacles are real. They have been real for years. The SIPRI Yearbook 2026 data makes their consequences visible: a world with 12,187 warheads, no operational arms control framework constraining any of the major nuclear powers, and a Chinese arsenal growing at rates that the existing deterrence architecture has no mechanism to address.

New START's death — the treaty that held the floor

February 5, 2026 — the day the constraint expired

New START — the New Strategic Arms Reduction Treaty between the United States and Russia — expired on February 5, 2026. This is not a procedural footnote in the international law of arms control. It is the most consequential arms control event since the United States withdrew from the Anti-Ballistic Missile Treaty in 2002. New START, signed in 2010 and extended in 2021, placed a ceiling of 1,550 deployed strategic warheads on each side and 700 deployed delivery vehicles. These numbers were not small — they represented the capacity to destroy civilization several times over. But they were constraints. They required verification. They involved mutual inspection. They created a baseline of mutual visibility that reduced miscalculation risk even as the arsenals themselves remained capable of catastrophic destruction.

The expiration of New START without a successor agreement leaves the United States and Russia with no legally binding constraint on the number of strategic nuclear warheads they may deploy. Both countries are currently free to increase their deployed warheads to any level their industrial and military capacity supports. Whether they will immediately exercise this freedom is a separate question — strategic culture, resource constraints, and the practical challenges of rapid expansion all create inertia. But the legal constraint is gone. And the verification mechanisms — the mutual inspections, the data exchanges, the notification requirements — are also gone. The world in which the United States and Russia have bilateral transparency about each other's nuclear postures, maintained by treaty obligation, ended on February 5, 2026. The world that replaced it is less transparent, less predictable, and more prone to the misperception and miscalculation that arms control was designed to prevent.

Russia's role in the collapse — and its nuclear posture

Russia's decision to suspend its participation in New START — announced in February 2023, in the second year of its invasion of Ukraine — and its subsequent failure to propose or engage with successor arrangements is not a diplomatic accident. It reflects a deliberate choice by Putin's government to exit the arms control framework as part of its broader strategy of maximizing coercive leverage over Western governments. The deployment of Oreshnik intermediate-range ballistic missiles to Belarus — documented by SIPRI in its 2026 data — is the concrete expression of this strategy in the nuclear domain: a weapon that is not covered by any existing treaty, deployed in a country directly bordering NATO members, designed to hold European capitals at risk in ways that restore some of the coercive leverage that the INF Treaty's elimination of ground-launched intermediate-range missiles had removed.

The Oreshnik deployment to Belarus is not primarily a military capability — a single missile type does not fundamentally alter the strategic balance between NATO and Russia. It is primarily a political signal: Russia is willing to use nuclear posture as a diplomatic and coercive tool, and it will do so aggressively in the absence of treaty constraints that no longer exist. The signal is directed at NATO members who might contemplate deeper support for Ukraine, at European governments whose populations are sensitive to nuclear risk, and at the international community that the NPT was designed to hold together. The message is consistent with Russia's broader nuclear signaling since 2022: the nuclear deterrent is a political instrument, and Putin will use it as one. The SIPRI Yearbook 2026 documents this posture in data. Policy must respond to the data.

The NPT — three consecutive failures

May 22, 2026 — another review conference without a final document

The Treaty on the Non-Proliferation of Nuclear Weapons — the NPT — is the foundational legal instrument of the international nuclear order. Signed in 1968, it commits nuclear-weapon states to work toward disarmament and non-nuclear-weapon states to refrain from acquiring nuclear weapons. Its review conferences — held every five years — are the institutional moments when this commitment is supposed to be renewed, assessed, and strengthened. The May 22, 2026 review conference ended without a final document. This is the third consecutive such failure — the 2015, 2022, and now 2026 conferences have all ended without the consensus final document that represents international reaffirmation of the NPT's commitments.

Three consecutive failed review conferences are not a coincidence. They are the quantitative expression of a political reality: the NPT's nuclear-weapon state parties — primarily the United States, Russia, China, the United Kingdom, and France — are not willing to make the disarmament commitments that non-nuclear-weapon states demand, and non-nuclear-weapon states are not willing to accept a final document that does not include meaningful disarmament progress. This standoff has been structural for decades. What the 2026 failure adds to the previous two is the backdrop of the worst nuclear arms control situation in the post-Cold War era: New START expired, Chinese arsenal growing, Oreshnik in Belarus, India-Pakistan conflict, North Korea's arsenal expanding. In this context, the NPT's inability to produce a final document is not merely a diplomatic disappointment. It is a systemic failure that the SIPRI Yearbook 2026 makes visible in stark numerical terms.

The NPT's slow dissolution and what replaces it

The NPT has not formally dissolved. Its membership remains broad. Its commitments remain legally binding for its signatories. But a treaty that cannot produce agreed reaffirmation of its commitments at three consecutive review conferences is a treaty whose effective authority is diminishing. The non-nuclear-weapon states that signed the NPT on the basis of a nuclear disarmament commitment are watching the nuclear-weapon states expand and modernize their arsenals while invoking NPT obligations to prevent proliferation. This asymmetry — disarmament commitments unfulfilled, non-proliferation obligations enforced — is the structural tension that has produced three consecutive failed review conferences. It will produce more failures unless the nuclear-weapon states are willing to make credible progress on disarmament that non-nuclear-weapon states can accept as good faith. Nothing in the 2026 strategic landscape suggests that credible disarmament progress is imminent.

What replaces the NPT's effective authority — if it continues to erode — is not nothing. It is the unilateral calculations of states that had previously abstained from nuclear weapons on the basis of the NPT's security guarantee and the nuclear-weapon states' disarmament commitments. Countries like Japan, South Korea, Saudi Arabia, and others that operate under the shadow of nuclear neighbors without their own deterrents are watching the NPT's erosion with a calculation that the treaty's architects hoped they would never have to make: is the security guarantee provided by the NPT and allied deterrence still sufficient, or does a deteriorating arms control landscape require independent deterrence options? The SIPRI Yearbook 2026 does not answer this question. But its data about the proliferation of nuclear warheads, the collapse of arms control frameworks, and the failure of the NPT review process is exactly the information those calculations are based on.

France, the UK, and European nuclear posture

Macron's decision — opacity as strategic doctrine

In March 2026, President Emmanuel Macron ordered an increase in France's nuclear arsenal — and simultaneously ordered that France would no longer publish the size of its nuclear stockpile. This is a strategic doctrine of deliberate opacity: the adversary is to know that the arsenal is growing, but not to know how large it is, how fast it is growing, or what its trajectory implies for French deterrence commitments. This opacity doctrine is not new — several nuclear-weapon states maintain more secrecy than France has historically offered. But the combination of expansion and opacity in March 2026 represents a specific message: France is responding to the deteriorating arms control landscape by increasing its deterrent and removing the transparency that the disarmament-oriented arms control community has sought.

The SIPRI Yearbook 2026 estimates France's arsenal at approximately 290 warheads — similar to its recent historical level — but notes the opacity decision and the expansion order. The strategic logic is clearly influenced by the combination of Russia's nuclear signaling, New START's expiration, and the debate about European strategic autonomy that has intensified as the credibility of US extended deterrence commitments has been questioned by events and by the policies of successive administrations. A Europe that cannot rely on American nuclear guarantees with the same confidence as during the Cold War is a Europe that has stronger incentives to ensure its own nuclear deterrence is credible, capable, and communicatively effective. Macron's March 2026 decision is the most concrete expression of this calculation that the SIPRI Yearbook 2026 has documented.

The UK's nuclear sharing — F-35A and the NATO commitment

The United Kingdom has taken a different but complementary approach to the deteriorating arms control landscape: while maintaining its own independent nuclear deterrent, it is acquiring 12 F-35A aircraft for NATO nuclear sharing — the alliance arrangement under which non-nuclear-weapon members host US nuclear weapons and their aircraft are certified to deliver them. This acquisition — documented in the SIPRI Yearbook 2026 — is significant for multiple reasons. The F-35A is the nuclear sharing aircraft of the current generation, replacing the F-16 in this role across multiple NATO members. The UK's acquisition of F-35As for nuclear sharing, in addition to its own independent Trident deterrent, reflects an explicit commitment to the NATO nuclear architecture at a moment when that architecture's credibility is under stress.

The UK's dual posture — independent deterrent plus NATO nuclear sharing commitment — represents the most robust nuclear engagement in the European alliance. It sends a specific signal: the UK is not retreating from nuclear commitments in response to the deteriorating arms control landscape. It is deepening them. This posture is directly relevant to the European strategic autonomy debate — the question of whether European security can be maintained without full American nuclear guarantees. The UK's answer, in the SIPRI Yearbook 2026 data, is clear: yes, through a combination of independent British deterrence and deep NATO nuclear integration that provides multiple layers of credibility. This answer is not unanimously shared across Europe — the domestic politics of nuclear weapons in Germany, the Netherlands, and Belgium remain complex. But it is the answer that the UK's F-35A acquisition expresses in the most concrete possible way.

India-Pakistan — the armed conflict that SIPRI documented

May 2025 — two nuclear powers in armed conflict

The SIPRI Yearbook 2026 documents a fact that deserves far more global attention than it received: in May 2025, India and Pakistan engaged in an armed conflict. Two nuclear-weapon states — states that between them possess a combined arsenal of over 300 nuclear warheads — fought each other with conventional weapons in a conflict whose escalation was, for the duration of the fighting, a genuinely open question. The conflict was limited in geographic scope and duration. It did not result in nuclear use. But its occurrence — documented in the SIPRI yearbook as a data point in the global nuclear proliferation assessment — is a reminder that the abstract risk of nuclear escalation between nuclear-armed adversaries is not a Cold War historical artifact. It is a current operational reality in the world's most complex nuclear proliferation environment.

The India-Pakistan nuclear relationship is one of the most studied cases in proliferation scholarship — and one of the most persistently misunderstood by general audiences. Both states lack the stabilizing characteristics of the US-Soviet nuclear relationship: there are no formal arms control agreements between them, no direct hotlines with the reliability of the US-Soviet/Russian equivalents, and their command and control architectures — while improving — are less robust than those of the original nuclear powers. The May 2025 conflict tested these structures in real operational conditions. That it did not escalate to nuclear use is a matter for which the world should be grateful — and for which the professionals on both sides who managed the crisis deserve recognition. But the fact that it happened at all is the kind of data point that should change how urgently the international community addresses the arms control vacuum in South Asia. The SIPRI Yearbook 2026 documents it. The diplomatic community has not fully processed it.

The nuclear arms race in South Asia

The South Asian nuclear balance between India and Pakistan exists within a larger triangular relationship that also involves China. India's nuclear modernization — the development of longer-range ballistic missiles like the Agni V, the deployment of nuclear-armed submarines, the diversification of delivery systems — is motivated not just by the Pakistan deterrence requirement but by the growing complexity of the Chinese nuclear threat. China's expansion from approximately 350 to 620 warheads over four years creates pressure on India's deterrence calculations that did not exist when India's arsenal was sized primarily for the Pakistan deterrence requirement. Pakistan's response to Indian modernization creates a cascading pressure in the other direction. This regional arms dynamic — three-way, without formal arms control, occurring in a geography where miscalculation risks are structurally high — is the nuclear proliferation problem that the global arms control community is least equipped to address and most urgently needs to engage.

The SIPRI data on South Asian nuclear arsenals — imprecise by necessity, since neither India nor Pakistan publishes official figures — reflects this dynamic. The yearbook's estimates for India (approximately 172 warheads) and Pakistan (approximately 170 warheads) place both countries in a range where limited nuclear use — so-called battlefield nuclear weapons — is a genuinely contemplated option in crisis scenarios. This is the most dangerous nuclear landscape in the world today — not because either arsenal is large, but because the crisis management structures, the escalation control mechanisms, and the arms control frameworks are least developed relative to the risk of conflict. The May 2025 armed conflict was a warning. The international response was inadequate. The SIPRI Yearbook 2026 makes that inadequacy visible. The appropriate response to that visibility is not to look away.

North Korea — approximately 60 assembled warheads

A regime that builds while the world watches

The SIPRI Yearbook 2026 estimates that North Korea has approximately 60 assembled nuclear warheads — a figure that represents the end product of decades of systematic development, in defiance of multiple UN Security Council resolutions, comprehensive economic sanctions, and the full weight of international diplomatic pressure. 60 warheads may seem small against the arsenals of the major nuclear powers. In the operational context of the Korean Peninsula, it is a transformative number. It is sufficient to threaten every major city in South Korea and Japan. It is sufficient to hold US military bases in the region at risk. And with the development of ICBMs capable of reaching the continental United States — tested and demonstrated in multiple launches — it is approaching the threshold of a strategic deterrent against American intervention in Korean contingencies.

Kim Jong Un's strategy has been explicit, consistent, and — measured by its outcomes — successful: develop nuclear weapons, develop the delivery systems to threaten US allies and the US homeland, survive the resulting diplomatic isolation by leveraging the threat to extract economic and political concessions, and use the nuclear deterrent to protect a regime that would otherwise be vulnerable to the kind of democratic pressure that ended the Soviet bloc. 60 warheads is the quantitative expression of this strategy's success. They exist. They are deliverable. They have been demonstrated in tests that have produced no effective international response. The sanctions regime that was supposed to prevent this development has not achieved its stated objective. And the world in 2026 — with North Korean soldiers fighting alongside Russian forces in Ukraine, with Pyongyang receiving economic support from Moscow and Beijing — has fewer leverage points over Kim than it had five years ago. 60 warheads is the accounting of that failure.

The DPRK and the failure of coercive diplomacy

The international community's failure to prevent North Korea's nuclear arsenal development is one of the most consequential strategic failures of the post-Cold War era. The reasons for this failure are complex and involve choices made by multiple administrations and governments — but the core structural reality is this: North Korea's nuclear program has been consistently prioritized by the regime above any economic or diplomatic benefit that denuclearization might offer, and the costs of military action to prevent it have always been assessed as higher than the costs of a nuclear-armed North Korea. This calculation, repeated across decades of administrations in Washington, Seoul, and Tokyo, has produced 60 assembled warheads. Whether it was the right calculation at each moment it was made is debatable. Its cumulative outcome is not: Pyongyang has a nuclear arsenal that is now a permanent feature of the regional security landscape.

The consequences for the global non-proliferation regime are significant and underappreciated. North Korea's successful development of a nuclear arsenal — in defiance of the NPT, in defiance of sanctions, in defiance of the stated red lines of successive US administrations — is the most visible demonstration that determined states can develop nuclear weapons if they are willing to accept the costs. This demonstration is observed in every capital where nuclear ambitions exist or might exist — in Saudi Arabia, in Turkey, in states that have historically operated under the US nuclear umbrella whose credibility they may be reassessing. The SIPRI data on North Korea is not just a regional problem. It is a global proliferation signal that the nuclear architecture's inability to prevent the DPRK arsenal will be studied and referenced by every future proliferant that calculates the costs and benefits of going nuclear.

Golden Dome — $1.2 trillion and the arms race it accelerates

The missile defense proposal and its strategic consequences

The "Golden Dome" missile defense proposal — estimated at approximately $1.2 trillion over its projected development and deployment timeline, according to SIPRI and independent analyses — is the most recent major development in the US nuclear and strategic defense posture to enter the 2026 strategic landscape. The concept — a layered missile defense system that would attempt to intercept ballistic and hypersonic missiles at multiple points in their trajectory — is a direct descendant of the Reagan-era Strategic Defense Initiative and reflects the same underlying strategic logic: if the threat of nuclear retaliation is insufficient to prevent attack, the ability to defend against incoming missiles provides an alternative strategic posture.

The $1.2 trillion estimate for Golden Dome is significant not just as a budget figure but as a strategic signal. China and Russia have both historically viewed US missile defense development as a threat to their deterrence — the logic being that a state with effective missile defenses is a state whose deterrence posture shifts from mutually assured destruction toward a first-strike capability, since it could potentially absorb a retaliatory strike after launching a first strike of its own. This perception — whether analytically justified or not — has driven both Russia and China to develop countermeasures: hypersonic glide vehicles, maneuvering warheads, and saturation attack options designed to overwhelm missile defense systems. The announcement of Golden Dome as a major US investment priority will accelerate these countermeasure programs — which means that the approximately $1.2 trillion investment is not a path to strategic stability. It is an accelerant of the arms race that the SIPRI Yearbook 2026 is documenting.

The deterrence paradox — when defense becomes destabilizing

The strategic paradox of missile defense — that effective defensive systems can be destabilizing rather than stabilizing — is one of the oldest problems in nuclear deterrence theory. It has been understood, formally modeled, and written into the reasoning behind the ABM Treaty of 1972 — which the United States withdrew from in 2002. The logic is straightforward: if both sides are mutually vulnerable to nuclear attack, neither side has an incentive to strike first, because the retaliation will be devastating. If one side develops effective missile defenses that reduce its vulnerability, the other side faces a deteriorated deterrence posture and has both a motive to strike before defenses are complete and an incentive to develop systems that can overcome those defenses. The ABM Treaty was designed to preserve mutual vulnerability — and therefore mutual deterrence stability — by limiting missile defense. Its demise opened the current trajectory toward a world where both sides are investing simultaneously in offensive nuclear capabilities and defensive countermeasures in an escalatory cycle with no natural terminus.

Golden Dome, at $1.2 trillion, accelerates this cycle. It does not end it. China's response to a credible US missile defense system will be to expand its arsenal further — past 620 warheads, toward a number sufficient to saturate the defense with simultaneous launches. The math of saturation attack is inexorable: sufficiently large offensive arsenals overwhelm any defense that can be built at finite cost. The United States building a $1.2 trillion defense system tells Beijing to build a $500 billion offense expansion to overcome it. The SIPRI numbers will look worse in five years than they do in 2026. And the era of disarmament — which the SIPRI Yearbook 2026 has confirmed as dead — will be even further from resurrection. This is the arms race logic that the Golden Dome announcement sets in motion. It is worth naming clearly, even when the political dynamics that produced the announcement make naming it uncomfortable.

The disarmament era — its birth and its death

From the Cold War's end to the present collapse

The era of disarmament had a specific birth — the INF Treaty of 1987, the START I of 1991, the Moscow Treaty of 2002, New START of 2010 — and a specific death, which the SIPRI Yearbook 2026 documents with mathematical precision. Between 1991 and approximately 2010, the number of nuclear warheads in the world fell dramatically — from over 60,000 at the Cold War peak to approximately 15,000. This reduction was real, verified, and mutual. It reflected a genuine, if imperfect, political commitment by the major nuclear powers to move toward a less dangerous world. The NPT's non-proliferation norm was holding — no state that had agreed to forgo nuclear weapons had violated that commitment successfully since India and Pakistan in the late 1990s. The arms control architecture was imperfect but functional.

The death of this era did not happen on a single day. It accumulated across a series of decisions: the US withdrawal from the ABM Treaty in 2002; the US and Russian failure to negotiate a successor to the INF Treaty after its collapse in 2019; the failed NPT review conferences of 2015 and 2022; Russia's suspension of New START participation in 2023; and finally New START's expiration on February 5, 2026. Each of these decisions was made in a specific political context, with specific justifications, by specific governments. Taken together, they constitute the dismantling of the arms control architecture that the Cold War's end made possible. The SIPRI Yearbook 2026 is the first annual snapshot that documents the world after that dismantling is complete. 12,187 warheads. No operational treaty constraints. Three consecutive NPT failures. The era is over. The question is what replaces it.

What replaces disarmament — and whether anything can

The honest answer to what replaces the disarmament era is: nothing, in the near term. The political conditions that made the original arms control architecture possible — the mutual desire of the US and USSR for reduced risk after the Cuban Missile Crisis, the shared recognition that existing arsenals were strategically irrational in their size, the domestic political support for arms control in both countries — do not currently exist between the United States, Russia, and China simultaneously. Russia is at war and using nuclear signaling as a coercive tool. China is expanding its arsenal toward a full strategic triad. The United States is investing in missile defense that both adversaries see as destabilizing. In this context, the negotiation of a multilateral arms control framework — which is the only type of framework that could address the full landscape the SIPRI Yearbook 2026 describes — is not a near-term diplomatic prospect.

What remains possible, and what the SIPRI Yearbook 2026's data makes urgent, is a clear-eyed engagement with the risks that the current landscape creates. Not the optimistic diplomacy of the disarmament era, which produced genuine reductions and genuine stability and deserves to be pursued again when conditions allow. But the sober risk management of a world in which nuclear weapons are numerous, constrained by no treaty, possessed by states in active or latent conflict with each other, and whose leaders have in several cases demonstrated a willingness to use nuclear signaling as a political instrument. Managing these risks does not require arms control treaties. It requires investment in crisis communication channels, in the hotlines and protocols that reduce miscalculation probability, in the early warning systems that give decision-makers time to assess rather than react, and in the international monitoring mechanisms that provide transparency even in the absence of formal treaty obligations. The disarmament era is dead. The risk management era must succeed it. The SIPRI Yearbook 2026 has documented why there is no alternative.

The people under the warheads — what this means for ordinary lives

Deterrence as a daily reality

The 12,187 warheads documented in the SIPRI Yearbook 2026 exist in a specific relationship with the people who live under their shadow. That relationship is deterrence — the doctrine that says the existence of these weapons prevents their use. For most people in nuclear-armed or nuclear-protected states, deterrence is a background assumption so deeply embedded in political culture that it has become invisible. The warheads are there. They have always been there. They have not been used in a conflict since 1945. Therefore they work. This logic — the logic of deterrence as proven theory — is not unreasonable given the historical record. But it depends on assumptions of rationality, communication, and crisis management that the SIPRI Yearbook 2026 data challenges in several dimensions simultaneously.

The May 2025 India-Pakistan conflict. Russia's nuclear signaling since 2022. The Oreshnik deployment to Belarus. North Korea's 60 warheads and its ICBM tests. The expiration of New START without a successor. Each of these events reduces, in some specific way, the margin of deterrence stability that the post-Cold War arms control architecture had built. They do not necessarily make nuclear war more probable. But they make it less unthinkable — and unthinkability is part of what deterrence depends on. A world in which nuclear use has moved from completely unthinkable to merely highly unlikely is a world in which deterrence is doing more work with less structural support. The 12,187 warheads are the same instruments they have always been. The political and institutional architecture that constrains them has eroded. And the distance between the warheads and the people under their shadow, maintained by that architecture, has narrowed. This narrowing deserves to be named. The SIPRI Yearbook 2026 has measured it.

The analysts who carry this knowledge

I want to acknowledge something that the analytical format of this piece tends to suppress: the weight of this knowledge. The researchers at SIPRI who produce the yearbook, the arms control experts who follow these developments daily, the diplomats who have spent careers trying to build frameworks that reduce nuclear risk — they carry information about the world's nuclear status that is not shared by most of the populations who live under these weapons. They know that 12,187 warheads exist, that New START has expired, that the NPT has failed three consecutive reviews, and they know what these facts mean. Living with this knowledge, and continuing to try to do something about it — through research, through advocacy, through the patient diplomatic work of building the next arms control framework from a worse starting position than the last one — requires a form of institutional courage that the clean format of a yearbook release does not convey. The SIPRI Yearbook 2026 is the product of that courage. It deserves to be read with the gravity it merits.

The accountability gap — who is responsible

Leaders who choose the arsenal, not the treaty

The SIPRI Yearbook 2026's data is not the product of anonymous historical forces. It is the product of specific decisions made by specific leaders with names, titles, and dates. Vladimir Putin ordered the suspension of Russia's New START participation in February 2023 — name, title, date. Xi Jinping oversees an arsenal expansion from 350 to 620 warheads between 2022 and 2026 — name, title, documented trajectory. Kim Jong Un has personally overseen every North Korean nuclear and missile test that produced the 60 assembled warheads — name, title, test records. Emmanuel Macron ordered the French arsenal expansion in March 2026 — name, title, date. Each of these decisions was made by a human being exercising political authority. Each of them is traceable. Each of them contributed to the landscape that the SIPRI Yearbook 2026 documents.

This accountability matters not because naming decision-makers changes the strategic landscape — it does not. It matters because it resists the tendency to treat arms race dynamics as natural phenomena — something that happens to the world, rather than something that specific human beings with specific political interests choose. The SIPRI Yearbook 2026 data is the accumulated outcome of choices. Choices can be made differently. Different leaders can make different choices. Different domestic political environments can produce different choices. The era of disarmament was itself the product of specific political choices — by Reagan and Gorbachev, by Bush and Yeltsin — made in specific political contexts that produced specific treaties. The death of that era is also the product of specific choices. Understanding the choices and the choosers is not an assignment of blame — it is the prerequisite for imagining how different choices might be made.

What the SIPRI yearbook asks of its readers

The SIPRI Yearbook 2026, like all its predecessors, asks something of its readers: to take seriously the data it presents, to understand the implications of the trends it documents, and to carry the weight of this knowledge into whatever professional or civic capacity each reader occupies. For political leaders — the data demands engagement with arms control renewal. For defense planners — the data demands incorporation of the full proliferation landscape into planning assumptions. For researchers and analysts — the data demands the kind of clear-eyed reporting that this analysis has tried to provide. For citizens in nuclear-armed or nuclear-protected countries — the data demands at minimum an awareness that the deterrence architecture that protects them is less robust in 2026 than it was in 2010, and that this trajectory, if not addressed, will make it less robust still in 2030.

None of these demands is easily satisfied. The political landscape that would allow arms control renewal is not currently present. The deterrence architecture cannot be instantly strengthened by any individual decision. The arms race cannot be stopped by one actor choosing to stop. But the gap between the world described by the SIPRI Yearbook 2026 and the world that the arms control era briefly made possible is not an immutable feature of human reality. It is the consequence of political choices. And political choices, in democracies, ultimately respond to informed, sustained, organized political pressure from citizens who have decided that the world's nuclear landscape is their concern. The SIPRI Yearbook 2026 is the information. The response is ours to make.

The Oreshnik deployment — Belarus as nuclear theater

A missile, a country, a message

The deployment of Oreshnik intermediate-range ballistic missiles to Belarus — documented in the SIPRI Yearbook 2026 — is not primarily a military event. It is a diplomatic and coercive event in military form. Oreshnik, a medium-range ballistic missile system with conventional or nuclear warhead options and a range that brings most of Western Europe within reach from Belarusian launch sites, restores to Russia a category of capability that the INF Treaty had eliminated. Its deployment to Belarus — a nominally sovereign state that is functionally a Russian satellite since Lukashenko's political survival became dependent on Moscow's support — extends the geographic reach of this capability without formally deploying it on Russian soil, providing a thin diplomatic insulation layer.

The message of the Oreshnik deployment is directed primarily at NATO's Eastern members — Poland, the Baltic states, Slovakia, Romania — and at the European members that have been most active in supporting Ukraine. It says: your territory is within range of a system that does not comply with the now-defunct INF Treaty and that faces no treaty constraints. It says: the cost of supporting Ukraine includes accepting this threat environment. And it says: Russia's nuclear arsenal is not a static Cold War relic — it is an active, evolving, geographically deployed instrument of current political coercion. The SIPRI Yearbook 2026 documents this deployment as a quantitative addition to the Russian arsenal. Its qualitative significance — as a signal, a threat, and a demonstration of willingness to use nuclear posture as a diplomatic tool — is the dimension that the yearbook's data format captures incompletely but that no analysis of the 2026 nuclear landscape can leave unnamed.

Conclusion: The numbers that demand a response

What the SIPRI Yearbook 2026 has confirmed

The SIPRI Yearbook 2026, published on June 8, 2026, has confirmed with the authority of decades of rigorous independent research what serious observers of the arms control landscape have been documenting for years: the era of nuclear disarmament is over. New START has expired. The NPT review process has failed three consecutive times. China's arsenal has grown by 75% in four years to 620 warheads. Russia has deployed Oreshnik to Belarus and suspended all arms control engagement. North Korea has 60 assembled warheads. India and Pakistan fought each other with conventional weapons in May 2025. France has expanded its arsenal and stopped publishing its size. The UK is acquiring F-35As for nuclear sharing. The United States is proposing a $1.2 trillion missile defense system. The world has 12,187 nuclear warheads and no operational treaty constraining any of them.

This is the world the SIPRI Yearbook 2026 describes. It is the world we live in. And nobody — not the leaders who made the decisions that produced it, not the diplomatic community that was supposed to prevent it, not the media that covered each individual development without connecting them into the coherent picture the yearbook provides — has fully acknowledged what the data means. The era of disarmament is dead. The era that replaces it has not yet been named or designed. The 12,187 warheads are waiting for the world to decide what to do with the landscape they now inhabit. The SIPRI Yearbook 2026 is the cartography of that landscape. The response is our collective responsibility. And the first step is to look at the map without looking away.

The world that the numbers make visible

The numbers in the SIPRI Yearbook 2026 are not merely statistical. They are the map of a specific moral and political failure — the failure to maintain, in the face of competing national interests and political pressures, the institutional architecture that was making the world genuinely safer. That architecture was built by human beings who chose to prioritize it. It has been allowed to erode by human beings who chose to prioritize other things. The choice is reversible. The will to reverse it is the missing variable. The SIPRI Yearbook 2026 provides the evidence for why the will must be found. This analysis is one attempt to make that evidence visible. What it produces — in political discussion, in policy engagement, in the public understanding of what the nuclear landscape of 2026 means for the people who live in it — is the measure of whether the numbers have done their work. They deserve to. All 12,187 of them.

The voices that have fought this battle

The arms controllers who kept working

The story of the arms control era's death is also the story of the people who tried to prevent it. The diplomats who negotiated New START and fought to maintain it. The researchers at SIPRI, the Arms Control Association, the Bulletin of the Atomic Scientists, and dozens of other institutions who have tracked these weapons and argued for their reduction across decades of political indifference and institutional erosion. The civil society organizations that have kept the disarmament argument alive in public discourse when political leaders have preferred to ignore it. The scientists who produce the doomsday clock assessments that translate technical nuclear risk into a symbol the public can grasp. These voices have been consistent, evidence-based, and — as the SIPRI Yearbook 2026 confirms — insufficiently heard. They deserve recognition not as consolation but as acknowledgment that the failure to prevent the arms control era's death was not for lack of effort. It was for lack of political will in the capitals that matter.

The work of these voices continues. The Arms Control Association will publish its next assessment. SIPRI will produce its 2027 yearbook. The doomsday clock will be set again. And the landscape they describe will be shaped by the political decisions made between now and then — in Washington, in Moscow, in Beijing, in Pyongyang. The SIPRI Yearbook 2026 is both an accounting of the past and an argument for the future: that the numbers we have allowed to accumulate can be, with sufficient political will, reduced again. The era of disarmament was real. It produced real reductions. Its methods — verified, mutual, treaty-based — are known and available. What is required is the political will to apply them again, in harder conditions, against more numerous obstacles, with the urgency that 12,187 warheads and no treaty constraints demand. This is the demand the SIPRI Yearbook 2026 makes. The response is ours to give.

Conclusion: After the disarmament era

What 2026 requires of us

The SIPRI Yearbook 2026, published on June 8, is a document that will be cited, analyzed, and debated for years. Its numbers — 12,187 warheads, 620 Chinese, 2,100 on alert, New START expired, three NPT failures — will appear in policy papers, academic studies, and diplomatic briefings for as long as they describe the world we inhabit. They deserve to appear in one additional place: in the consciousness of the citizens who live under these weapons and whose political participation ultimately determines what their governments do about them. The era of disarmament is dead. The era that replaces it is being built — by default, by neglect, by the accumulation of decisions that prioritized other things over nuclear security. That default outcome can be changed. Not easily. Not quickly. But deliberately, with the kind of sustained political engagement that the arms control era required and that the post-arms-control era demands even more urgently.

The SIPRI Yearbook 2026 has documented where we are. The question is where we choose to go. Nobody admits the disarmament era is dead because admitting it requires accepting responsibility for what comes next. This analysis has tried to make the admission that the numbers demand. The response — in policy, in diplomacy, in the political culture of democracies that still have the institutional capacity to change their governments' priorities — is not something an analyst can produce. It is something citizens must demand. The numbers are there. The argument is made. The rest is ours.

Signed Maxime Marquette, columnist

Columnist's transparency box

Editorial positioning

This analysis is written from a perspective that considers nuclear disarmament to be a legitimate and necessary long-term goal, and that views the current trajectory of the nuclear arms landscape — documented by the SIPRI Yearbook 2026 — as a genuine crisis that demands urgent political engagement. This perspective does not imply that unilateral disarmament is a viable policy, nor that deterrence is without value. It does imply that the current level of nuclear risk is unacceptable and that the political will to address it must be rebuilt, in conditions that are worse than those that produced the original arms control architecture. The analysis makes explicit use of the SIPRI data and is transparent about where it moves from data to editorial judgment.

Methodology and sources

This analysis draws primarily on the SIPRI Yearbook 2026 (published June 8, 2026), including its summary document and the press release. The figure of 12,187 warheads, 9,745 in military stockpiles, 2,100–2,200 on immediate alert, and 620 Chinese warheads are from SIPRI's published estimates. The New START expiration date (February 5, 2026), the NPT Review Conference end date (May 22, 2026), the Macron arsenal expansion decision (March 2026), the UK F-35A nuclear sharing acquisition, the Oreshnik Belarus deployment, the India-Pakistan armed conflict (May 2025), and the North Korea warhead estimate (approximately 60) are all cited from SIPRI or cross-referenced secondary sources. The Golden Dome cost estimate of approximately $1.2 trillion is from independent analyses cited by SIPRI and CFR.

Nature of the analysis

This is an analysis that combines rigorous use of published data with strong editorial positions about the significance of the trends the data documents. The factual core — the SIPRI numbers and the specific arms control events of 2025–2026 — is sourced and verifiable. The editorial positions — that the disarmament era is over, that the current trajectory is dangerous, that political will must be rebuilt — are judgments that flow from the data but extend beyond it. These positions can be contested by analysts who assess the deterrence stability of the current landscape more favorably. This analysis makes the case that such assessments are inadequate to the evidence. Readers should engage with the SIPRI primary sources directly and assess these editorial judgments against the full data record.

Sources

Primary sources

SIPRI — Official press release Yearbook 2026: focus on nuclear weapons, escalation and arms control — June 8, 2026

SIPRI — Official summary of the Yearbook 2026 — June 2026

IC Brief — Nuclear modernization and arms control collapse analysis — 2026

Secondary sources

SIPRI — Essay: after New START expires, Europe must act on arms control — February 4, 2026

Council on Foreign Relations — The post-New START era: a world without limits on nuclear weapons — February 9, 2026

NATO — Rutte: global security context and NATO's response — June 17, 2026