Executive Summary
The last US-Russia arms treaty expired in February 2026, leaving a governance vacuum with no successor in negotiation. France and China are both expanding their nuclear forces. Three nuclear-armed nations are building up simultaneously, unbound by any shared legal framework.
The treaties are gone. The Iran war delivered a blunt lesson: partial nuclear capability does not deter — it invites attack. Every nuclear-armed government absorbed that message, and several are acting on it.
New START, the last legally binding cap on US and Russian strategic warhead numbers, expired February 5, 2026 with nothing to follow it. Pentagon analysts warn China could nearly triple its warhead count by 2035, driven by rapid ICBM construction and a new generation of ballistic-missile submarines. On March 2, French President Emmanuel Macron announced the most substantial shift in French nuclear posture since 1992. Three of the world's nine nuclear powers are now expanding their arsenals in parallel, unbound by any common legal framework.
Nuclear deterrence is no longer theoretical.
Key Takeaways
- New START expired February 5, 2026. For the first time since the early 1970s, US and Russian strategic forces operate without legally binding caps, increasing uncertainty on both sides.
- France announced its first warhead increase since 1992 and a "forward deterrence" framework for eight European nations, signalling a major shift in its nuclear posture.
- China has nearly tripled its stockpile since 2020. Pentagon analysts warn it could reach 1,000 warheads by 2030 — a shift that alters the Asia-Pacific balance significantly.
- Russia updated its nuclear doctrine in late 2024, lowering the threshold for use including in response to conventional attacks, sending a direct signal to NATO.
- The US demonstrated nuclear delivery capability without crossing the threshold by striking Iranian facilities with B-2 bombers in Operation Epic Fury.
- Macron specifically named India, Pakistan, and North Korea as nations rapidly boosting nuclear forces, underlining the global scope of the expansion.
What Nuclear Deterrence Actually Means
Deterrence is not a Cold War relic. It is shaping decisions in Washington, Moscow, Beijing, and Paris right now — and the speed at which its governing structure has collapsed makes it urgent to understand what deterrence actually requires to hold.
The logic is stark: if attacking a nation guarantees the attacker's destruction, the attack will not happen. The threat need never be executed. It only needs to be believed.
Mutual Assured Destruction — MAD — was never a planned policy. It emerged from the 1950s arms race as an unintended outcome and produced, paradoxically, one of the most stable periods in modern great-power history. Neither the US nor the Soviet Union could win a nuclear exchange. So neither initiated one.
Credibility, clarity, and communication made it function. Both sides maintained enough survivable capability to retaliate after a first strike. They built direct channels — hotlines, inspection regimes, arms treaties — so neither had to guess at the other's intentions. That architecture took decades to assemble, was always more fragile than it appeared, and is now gone.
Communication channels between most nuclear-armed states are limited, unreliable, or entirely absent. What disappeared is not just treaties — but the predictability that made deterrence survivable.
Why Arms Control Broke Down
The collapse accumulated across six years, one abandoned agreement at a time.
The INF Treaty, banning intermediate-range nuclear missiles in Europe since 1987, fell apart in 2019 after Washington accused Moscow of sustained violations. New START, capping US and Russian deployed strategic warheads at 1,550 each, was the last pillar. Russia suspended participation in February 2023. The treaty expired February 5, 2026 with no successor in place and no serious negotiation underway to produce one.
The Arms Control Association reports Putin proposed in September 2025 that both sides informally observe the treaty limits for another year. Trump called it "a good idea" in October. By January 2026: "If it expires, it expires." It did. The exchange captures how arms control actually ends — not with confrontation, but with indifference.
The NPT review conference is scheduled for April 2026 in New York. The NPT is the only binding framework requiring nuclear nations to pursue disarmament. As Chatham House points out, the actual trend across all nine nuclear-armed states runs firmly in the other direction.
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Three Powers, Three Different Calculations
Russia, China, and the United States are all expanding or actively signalling nuclear capability in 2026. Their strategies differ. The pressure they create is cumulative — and it compounds.
Russia updated its nuclear doctrine in late 2024, reportedly lowering the threshold for use to include conventional strikes on its nuclear infrastructure. The Oreshnik — a dual-capable hypersonic missile — was test-fired against Ukraine in November 2024. Throughout the Ukraine war, Moscow has kept the nuclear threat deliberately visible, deploying it as a political lever to constrain NATO's response options. Whether that threat is militarily credible or primarily performative is, in some respects, beside the point. It is working.
China has nearly tripled its nuclear stockpile since 2020. According to the Pentagon's 2024 China Military Power Report — the US Department of Defense's primary annual assessment of Chinese military capability — it is on track to reach around 1,000 warheads by 2030. Beijing is completing a full triad: land-based ICBMs, submarine-launched ballistic missiles, nuclear-capable bombers. It maintains a declared "no first use" policy — though whether that holds under genuine military pressure in a Taiwan scenario is a question Beijing has shown no interest in clarifying.
The United States is mid-way through modernising all three legs of its nuclear triad. In Operation Epic Fury, launched February 28, 2026, US forces struck Iranian nuclear facilities with conventional weapons delivered by B-2 stealth bombers — aircraft that are also nuclear-capable. The choice of platform was deliberate: a demonstration of deep-penetration delivery capability without crossing the nuclear threshold.
For the first time in the nuclear age, expansion is happening without rules, without trust, and without a referee.
How France Rewrote European Nuclear Strategy
For the first time since the Cold War, a European nation is actively extending its nuclear posture to neighbours. The implications stretch well beyond France, though exactly how far remains uncertain.
Standing beside the submarine Le Teméraire at Ile Longue on March 2, 2026, Macron announced France's "forward deterrence" doctrine. The Atlantic Council confirmed it marks the most substantial change in French nuclear posture in decades.
Four changes: France will increase its warhead count for the first time since 1992; stop publicly disclosing its stockpile size, currently estimated at around 290 warheads; permit nuclear-capable Rafale jets to deploy temporarily to allied territory; and build a formal nuclear cooperation framework covering eight nations — the UK, Germany, Poland, the Netherlands, Belgium, Greece, Sweden, and Denmark.
The 2026 US National Defense Strategy contained no reference to American extended nuclear deterrence for European allies and explicitly urged Europe to assume primary responsibility for its own conventional defence. As the only EU nuclear-armed state since Brexit, France had limited options. But stepping into a strategic vacuum and actually filling it are different things.
In simple terms: France is attempting to replace part of what the United States used to guarantee. German Chancellor Friedrich Merz announced a Franco-German nuclear steering group immediately after the speech. Both the Atlantic Council and Chatham House noted the limits: France retains sole launch authority, no formal guarantee extends to partners, and Finland, Norway, and the Baltic states are absent from the framework entirely. The announcement signals intent — but without shared control or binding guarantees, its deterrent value depends entirely on whether adversaries choose to believe it.
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What This Means / Why It Matters
Macron's announcement creates a deterrence layer alongside NATO, not inside it. If Russia treats it as credible, European dependence on US nuclear guarantees diminishes. If not — and the gaps in the framework give Moscow reason for scepticism — pressure will build for independent national capabilities, particularly in Poland and the Baltic states, which are absent from the current arrangement entirely.
India's exposure is direct. It shares borders with both Pakistan and China, two nations Macron named on March 2 as rapidly boosting their nuclear forces. India holds a declared no-first-use policy and a credible second-strike capability. India is now operating in a two-front nuclear environment where both adversaries are expanding simultaneously. India's doctrine assumes one escalation ladder at a time. That assumption no longer holds.
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So What Next?
Short term: The NPT conference in April 2026 is the first real test. A failure to reach consensus would not cause the erosion of multilateral nuclear governance — it would confirm it. Every non-nuclear nation watching will draw that conclusion independently. If even one mid-tier power concludes nuclear capability is the only credible deterrent, proliferation pressure will not remain contained.
Medium term: Any US-Russia bilateral dialogue carries more weight than current coverage suggests. Without an arms control floor, both sides operate with degraded visibility into each other's intentions, capabilities, and risk tolerance. That gap is where miscalculation becomes structurally probable.
Longer term: China is the variable that changes the calculus entirely. If Beijing reaches rough parity with US and Russian warhead numbers, deterrence shifts from a two-party equation to a three-way standoff with no agreed norms, no shared doctrine, and no crisis-management channels. That configuration has never been successfully managed. There is no particular reason to assume it would be now.
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Editorial View · Santhosh Vishwamitra
The Rules That Kept This Manageable Are Gone
Deterrence held during the Cold War because both sides understood the rules well enough to stay inside them. That shared understanding is considerably thinner today. Russia is deploying nuclear signalling as a political instrument in an active war. China is expanding without transparency. The US struck a country's nuclear programme using nuclear-capable aircraft. France is restructuring European security architecture in real time. The legal guardrails that once imposed a floor on all of this expired in February 2026, as the Arms Control Association has documented.
None of this means nuclear conflict is imminent. But the framework keeping deterrence intact is showing serious cracks, and the only reassurance available is that no weapon has yet been used. The institutions that built confidence between adversaries took decades to construct. They have been dismantled in years — and there is no serious plan to rebuild them.
Deterrence didn't collapse. It was quietly abandoned — and no one replaced it.
For India, the situation is unusually direct: two nuclear-armed neighbours both expanding, a US-China competition reshaping the Indo-Pacific, and a no-first-use posture that remains credible but was designed for a strategic environment that no longer fully exists.
The Bottom Line
The arsenals are growing. The treaties are gone. Nine nations hold nuclear weapons, and the governance structures built to manage that fact have collapsed faster than anyone moved to replace them. What stands between the current situation and a catastrophic miscalculation is not law, not diplomacy, not verified arms reduction — it is rational decision-making under extreme pressure. Deterrence has always depended on exactly that. History shows it doesn't fail gradually — it fails suddenly, when one side miscalculates the other's threshold. That risk is no longer theoretical. It is structural.
Santhosh Vishwamitra
Founder of Inside Stories, a geopolitics publication covering global power, conflict, and international affairs. For web development and writing content, visit
santhoshvishwamitrablog.wordpress.com.
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