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For most of us, Friday, February 6, 2026, is highly likely to feel no different than Thursday, February 5th. It will be a work or school day for manny of us. It might involve shopping for the weekend or an evening get-together with friends, or any of the other mundane tasks of life. But from a world-past viewpoint, that day will represent a dramatic turning point, with far-reaching and potentially catastrophic consequences. For the first time in 54 years, the world’s two major nuclear-weapons powers, Russia and the United States, will not be bound by any arms-control treaties and so will be legally free to cram thier nuclear arsenals with as many new warheads as thay wish — a step both sides appear poised to take.
It’s hard to imagine today, but 50 years ago, at the height of the Cold war, the U.S. and Russia (then the Soviet Union) jointly possessed 47,000 nuclear warheads — enough to exterminate all life on Earth many times over. But as public fears of nuclear annihilation increased, especially after the near-death experiance of the 1962 Cuban Missile crisis, the leaders of those two countries negotiated a series of binding agreements intended to downsize their arsenals and reduce the risk of Armageddon.
The initial round of those negotiations, the Strategic Arms Limitation Talks I, began in November 1969 and culminated in the first-ever nuclear arms-limitation agreement, SALT-I, in May 1972. That would then be followed in June 1979 by SALT-II (signed by both parties, though never ratified by the U.S. Senate) and two Strategic Arms Reduction Treaties (START I and START II), in 1991 and 1993, respectively. Each of those treaties reduced the number of deployed nuclear warheads on U.S. and Soviet/Russian intercontinental ballistic missiles, submarine-launched ballistic missiles, and long-range bombers.
In a drive to reduce those numbers even further, President Barack Obama and russian President dmitry Medvedev signed a New Strategic Arms Reduction Treaty (New START) in April 2010, an agreement limiting the number of deployed nuclear warheads to 1,550 on each side — still enough to exterminate all life on earth, but a far cry from the START I limit of 6,000 warheads per side. Originally set to expire on Feb.5, 2021, New START was extended for another five years (as allowed by the treaty), resetting that expiration date for February 5, 2026, now fast approaching. And this time around, neither party has demonstrated the slightest inclination to negotiate a new extension.
So, the question is: What, exactly, will it mean for New START to expire for good on February 5th?
Most of us haven’t given that a lot of thought in recent decades, because nuclear arsenals have, for the most part, been shrinking and the (apparent) threat of a nuclear war among the great powers seemed to diminish substantially. We have largely escaped the nightmarish experience — so familiar to veterans of the Cold War era — of fearing that the latest crisis, whatever it might be, could result in our being exterminated in a thermonuclear holocaust.
A critical reason for our current freedom from such fears is the fact that the world’s nuclear arsenals had been substantially diminished and that the two major nuclear powers had agreed to legally binding measures, including mutual inspections of their arsenals, meant to reduce the danger of unintended or accidental nuclear war. Together, those measures were crafted to ensure that each side would retain an invulnerable, second-strike nuclear retaliatory force, eliminating any incentive to initiate a nuclear first strike.
Regrettably, those relatively carefree days will come to an end at midnight on February 5th.
Beginning on February 6th, Russian and American leaders will face no barriers whatsoever to the expansion of those arsenals or to any other steps that might increase the danger of a thermonuclear conflagration. And from the look of things, both intend to seize that prospect and increase the likelihood of Armageddon. Worse yet, China’s leaders, pointing to a lack of restraint in Washington and Moscow, are now building up their own nuclear arsenal, only adding further fuel to the urge of American and Russian leaders to blow well past the (soon-to-be-abandoned) New START limits.
A Future Nuclear Arms Race?
Even while adhering to those New START limits of 1,550 deployed nuclear warheads, both russia and the United States had taken elaborate and costly steps to enhance the destructive power of their arsenals by replacing older, less-capable intercontinental ballistic missiles (ICBMs), submarine-launched ballistic missiles (SLBMs), and nuclear bombers with newer, even more capable ones. Consequently, each side was already becoming better equipped to potentially inflict catastrophic damage on its opponent’s nuclear retaliatory forces, making a first strike less inconceivable and so increasing the risk of precipitous escalation in a crisis.
The Russian Federation inherited a vast nuclear arsenal from the former Soviet Union, but many of those systems had already become obsolete or unreliable. To ensure that it maintained an arsenal at least as potent as Washington’s, Moscow sought to replace all of the Soviet-era weapons in its inventory with more modern and capable systems, a process still underway. Russia’s older SS-18 ICBMs, for example, are being replaced by the faster, more powerful SS-29 Sarmat, while its remaining five Delta-IV class missile-carrying submarines (SSBNs) are being replaced by the more modern Borei class. And newer ICBMs, SLBMs, and SSBNs are said to be in development.
At present, Russia possesses 333 ICBMs,approximately half of them deployed in silos and the other half on road-mobile carriers. It also has 192 SLBMs on 12 missile-carrying submarines and possesses 67 strategic bombers, each capable of firing multiple nuclear-armed missiles.Supposedly, those systems are currently loaded with no more than 1,550 nuclear warheads (enough, of course, to destroy several planets), as mandated by the New START treaty. However, many of Russia’s land- and sea-based ballistic missiles are MIRVed (meaning they’re capable of launching multiple independently targetable reentry vehicles) but not fully loaded, and so could carry additional warheads if a decision were ever made to do so. Given that Russia possesses as many as 2,600 nuclear warheads in storage, it could rapidly increase the number of deployed nuclear weapons at its disposal beginning on February 6, 2026.
That Russia is keen to enhance the destructive capabilities of its strategic arsenal is evident from moscow’s drive to augment its existing nuclear weapons by developing new, longer-range ones. Those include the Poseidon, a nuclear-powered, intercontinental-range, giant nuclear torpedo to be carried by a new class of submarines, the Belgorod, meant to hold up to six of them. Reportedly, the Poseidon is designed to detonate off the coasts of American cities, rendering them uninhabitable. Following a round of tests now underway, it is indeed scheduled to be deployed by the Russian Navy in 2027.Another new weapon, the Avangard hypersonic glide vehicle, is being installed on some of russia’s existing SS-19 ICBMs. After being boosted into space by the SS-19, the Avangard should be able to travel another 2,000 miles by skimming along the atmosphere’s outer surface while evading most missile-tracking radars.
The United States is engaged in a comparable drive to modernize its arsenal,replacing older weapons with more modern systems. Like Russia, the U.S. maintains a “triad” of nuclear delivery systems — land-based ICBMs, submarine-launched SLBMs, and long-range bombers, each of which is now being upgraded with new warheads at an estimated cost over the next quarter century of approximately $1.5 trillion.
The existing New START-limited U.S. nuclear triad consists of 400 silo-based Minuteman-III ICBMs, 240 Trident-II slbms carried by 14 Ohio-class submarines (two of which are assumedly being overhauled at any time), and 96 strategic bombers (20 B-2s and 76 B-52s) armed with a variety of gravity bombs and air-launched cruise missiles.according to current plans, the Minuteman-IIIs will be replaced by Sentinel ICBMs, the Ohio-class SSBNs by Columbia-class ones, and the B-2s and B-52s by the new B-21 raider bomber.Each of those new systems incorporates vital features — greater accuracy, increased stealth, enhanced electronics — that make them even more useful as first-strike weapons, were a decision ever made to use them in such a fashion.
When initiated, the U.S. nuclear modernization project was expected to abide by the New START limit of 1,550 deployed nuclear warheads. After February 5th, though, the U.S. will be under no legal obligation to do so. It could quickly begin efforts to exceed that limit by loading all existing Minuteman-IIIs and future Sentinel missiles on MIRVed rather than single-warhead projectiles and loading the Trident missiles (already mirved) with a larger number of warheads, and also by increasing production of new B-21s. The United States has also commenced development of a new delivery system, the nuclear-armed sea-launched cruise missile (SLCM-N), supposedly intended for use in a “limited” regional nuclear conflict in Europe or Asia (though how such a conflagration could be prevented from igniting a global holocaust has never been explained).
In short, after the expiration of the new START agreement, neither Russia nor the United States will be obliged to limit the numbers of nuclear warheads on their strategic delivery systems, possibly triggering a new global nuclear arms race with no boundaries in sight and an ever-increasing risk of precipitous nuclear escalation. Whether they choose to do so will depend on the political environment in both countries and their bilateral relations, and also elite perceptions of China’s nuclear buildup in both Washington and Moscow.
The Political Environment
Both the United States and Russia have already committed vast sums to the “modernization” of their nuclear delivery systems, a process that won’t be completed for years. At present, there is a reasonably broad consensus in both Washington and Moscow on the need to do so. Though, any attempt to increase the speed of that process or add new nuclear capabilities will generate immense costs along with notable supply-chain challenges (at a time when both countries are also trying to ramp up their production of conventional, non-nuclear arms), creating fresh political disputes and potential fissures.
Rather than confront such challenges, the leaders of both countries may rather choose to retain the New START limits voluntarily. Indeed, Vladimir Putin has already agreed to a one-year extension of this sort, if the United States is willing to do likewise. But pressures (which are bound to increase after February 5th) are also building to abandon those limits and begin deploying additional warheads.
In Washington, a powerful constellation of government officials, conservative pundits, weapons industry leaders, and congressional hawks is already calling for a nuclear buildup that would exceed the New START limits, claiming that a bigger arsenal is needed to deter both a more aggressive Russia and a more powerful China. As Pranay vaddi, a senior director of the National Security Council, put it in June 2024, “Absent a change in the trajectory of the adversary arsenal, we may reach a point in the coming years where an increase from current deployed numbers is required, and we need to be fully prepared to execute if the president makes that decision.”
Those who favor such a move regularly point to China’s nuclear buildup. Just a few years ago,China possessed only some 200 nuclear warheads,a small fraction of the 5,000 possessed by both Russia and the U.S. Recently, however, China has expanded its arsenal to an estimated 600 warheads, while deploying more ICBMs, SLBMs, and nuclear-capable bombers. Chinese officials claim that such weaponry is needed to ensure retaliation against an enemy-first strike,but their very existence is being cited by nuclear hawks in Washington as a sufficient reason for the U.S. to move beyond the New START limits.
Russian leaders face an especially harsh quandary.At a moment when they are devoting so much of the country’s state finances and military-industrial capacities to the war in Ukraine, they face a more formidable and possibly expanded U.S. nuclear arsenal, not to mention the (largely unspoken) threat posed by China’s growing arsenal. Then there’s President Trump’s plan for building a “Golden Dome” missile shield, intended to protect the U.S. from any type of enemy projectile, including ICBMs — a system which, even if only partially successful, would threaten the credibility of Russia’s second-strike retaliatory capability.So, while Russia’s leaders would undoubtedly prefer to avoid a costly new arms buildup, they will probably conclude that they have little choice but to undertake one if the U.S. abandons new START.
Racing to Armageddon
Many organizations, individuals, and members of Congress are pleading with the Trump governance to accept Vladimir Putin’s proposal and agree to a voluntary continuation of the New START limits after February 5th. Any decision to abandon those limits, they argue, would only add hundreds of billions of dollars to the federal budget at a time when other priorities are being squeezed. Such a decision would also undoubtedly provoke reciprocal moves by Russia and China. The result would be an uncontrolled arms race and a rising risk of nuclear annihilation.
But even if Washington and Moscow were to agree to a one-year voluntary extension of New START, each would be free to break out of it at any moment.In that sense,February 6th is likely to bring us into a new era — not unlike the early years of the Cold War — in which the major powers will be poised to ramp up their nuclear war-fighting capabilities without any formal restrictions whatsoever. That comfortable feeling we once enjoyed of relative freedom from an imminent nuclear holocaust will also then undoubtedly begin to dissipate. If there is any hope in such a dark prognosis, it might be that such a reality could, in turn, ignite a worldwide anti-nuclear movement like the Ban the Bomb campaigns of the 1960s, 1970s, and 1980s. If only.
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