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End of the New START Treaty: Major Powers Evade Control Over Their Nuclear Weapons
The civilian population and their political representatives must finally wake up and take joint action to persuade those responsible in the ruling political establishment to change course in the interests of humanity.
Feb 06, 2026
February 5, 2026, was the date on which the New START Treaty expired without the US and Russia renewing it. The People's Republic of China also did not participate in renegotiations.
Nothing now stands in the way of unrestrained further nuclear armament. This makes the world even more unsafe. How crazy do you have to be to take this risk?
What Did the New START Treaty Contain?
START stands for “New Strategic Arms Reduction Treaty” and is a successor treaty to START I. It entered into force on February 5, 2011. Ten years later, it was extended until February 5, 2026. On that date, it expired without renegotiation.
The New START Treaty stipulates that Russia and the US:
- May have a maximum of 1,550 operational strategic nuclear warheads
- As well as 800 launchers (mobile launchers, submarines, strategic bombers)
- And 700 operational delivery systems (e.g., ballistic missiles).
- In addition, the treaty provides for extensive transparency, control mechanisms, and verification measures, such as the regular exchange of data and the conduct of inspections.
This was intended to limit the risk of nuclear conflict and create stability in bilateral relations between the US and Russia.
The New START was a key treaty which, alongside other disarmament and control treaties that have also expired, was intended to reduce the risk of a third world war.
Why Was It Not Renegotiated in Time?
In 2023, Russia suspended the New START treaty in the wake of its attack on Ukraine and criticized the US for violating the treaty. The US government also had doubts as to whether Russia was still complying with the treaty's limitations. A few months later, the US also stopped implementing the provisions of the New START treaty, no longer allowing inspections and no longer providing transparency.
Russia signaled its continued compliance with the treaty's numerical limits, but did not allow transparency and inspections. US President Donald Trump has been inconsistent and has so far taken no initiative to renegotiate the treaty (“If it expires, it expires”). According to Daryl G. Kimball (2026) on the Arms Control Association website:
Since taking office last January, his administration has neither outlined a strategy for negotiating a new nuclear arms control agreement with Russia nor outlined how it would bring China into nuclear risk reduction or arms control talks.
What Dangers Does the Failure to Renew the START Treaty Pose to the World?
For the first time since 1972, there are now no effective restrictions on the nuclear programs of the two superpowers.
Within a few weeks, the operational nuclear arsenals of the US and Russia could be significantly expanded. According to US peace researcher Jennifer Knox (2026), a doubling would be possible in a relatively short time:
Without mutual constraints, the two countries could field hundreds more nuclear weapons in a matter of weeks, and within a few years, their deployed nuclear forces could double. The resulting arms buildup, the lack of insight into each other's plans and arsenals, and the ending of formal bilateral consultations engendered by the treaty's verification regime would further destabilize relations between the United States and Russia, increase the risk of nuclear conflict through miscalculation or misunderstanding, and waste resources that neither country has to spare. Renewed nuclear competition between the United States and Russia could also drive China and other nuclear powers to expand their arsenals, leading to deteriorating security conditions around the world.
This significantly increases the risk of an accidental nuclear war due to false reports or technical failure.
Demands on the Major Powers: Comply With the Treaty and Renegotiate!
Russia and the US could voluntarily continue to adhere to the New START treaty until a new treaty has been negotiated between them, preferably with the involvement of China. Furthermore, the renegotiation of a joint treaty should require compliance with the Nuclear Non-Proliferation Treaty and the signing and ratification of the nuclear ban treaty that has already been adopted by the United Nations. The non-participation of the US, Russia, China, and, incidentally, other nuclear states in nuclear disarmament measures violates Article VI of the current Nuclear Non-Proliferation Treaty.
In a statement, the German group of scientists from the VDW (2026) calls for more comprehensive negotiations between the major powers:
Joint limitation measures would create a more positive environment for talks on further strategic reductions, new restrictions on medium-range missiles and tactical nuclear weapons, limitations on strategic missile defense systems, and other measures to reduce nuclear risks. These include, above all, joint steps to mitigate the risks of integrating artificial intelligence into the nuclear command and control structure.
Conclusion
How deranged must the politicians in Russia, the US, and China be that they are unwilling to sit down at the table and reduce the danger of nuclear war through new START negotiations! The civilian population and their political representatives must finally wake up and take joint action to persuade those responsible in the ruling political establishment to change course in the interests of humanity. Nuclear weapons must be banned. Negotiations and diplomacy make the world much safer than unrestrained nuclear armament.
This is why the United Nations must also take action—even though it is currently being deliberately weakened and blocked by the US and Russia.
International Phycisians for the Prevention of Nuclear War activist and peace researcher Rolf Bader (2026) summarizes the demands in light of the expected modernization and expansion of nuclear arsenals as follows:
In this situation (of) escalating tensions, the United Nations would be called upon to act. Crisis prevention would be necessary to stop the looming arms race. With the support of influential member states in the Global South, attempts could be made to initiate negotiations to minimize risk.
The goal must be to negotiate at least a reduction in the highest alert level and a renunciation of the first use of nuclear weapons. Even if the chances are slim at present, everything should be tried to prevent the looming nuclear arms race.
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Rubio Confirms End of New START, Sparking Calls for Nuclear Talks With Russia, China
"Trump, Putin, and Xi can and must put the world on a safer path by taking commonsense actions to build down the nuclear danger," said one campaigner.
Feb 04, 2026
Secretary of State Marco Rubio on Wednesday implicitly confirmed that New START—a key arms control treaty between the United States and Russia—will expire Thursday, prompting renewed demands for what one group called "a more coherent approach from the Trump administration" toward nuclear nonproliferation.
Asked about the impending expiration of New START during a Wednesday press conference, Rubio said he didn't "have any announcement" on the matter, and that President Donald Trump "will opine on it later."
"Obviously, the president’s been clear in the past that in order to have true arms control in the 21st century, it’s impossible to do something that doesn’t include China because of their vast and rapidly growing stockpile," Rubio said.
🇺🇸🇷🇺🇨🇳 Secretary of State Marco Rubio:
I don't have any announcement on New START right now. I think the President will opine on it later.
The President has been clear in the past that in order to have true arms control in the 21st century, it's impossible to do something that… pic.twitter.com/8pxi3bfdsy
— Visioner (@visionergeo) February 4, 2026
New START, signed in 2010, committed the United States and Russia to halving the number of strategic nuclear missile launchers in their arsenals. While the treaty did not limit the size of the countries' actual nuclear arsenals, proponents pointed to its robust verification regime and other transparency features as mutually beneficial highlights of the agreement.
“We have known that New START would end for 15 years, but no one has shown the necessary leadership to be prepared for its expiration,” said John Erath, senior policy director at the Center for Arms Control and Non-Proliferation and former longtime State Department official.
“The treaty limited the number of nuclear weapons the United States and Russia could have, but perhaps more importantly, New START also provided each country with unprecedented insights into the other’s arsenal so that Washington and Moscow could make decisions based on real information rather than speculation," Erath added.
The last remaining major treaty limiting the world's two largest nuclear arsenals expires Feb. 5. Does this mean the end of nuclear arms control? Not necessarily. Read our statement.armscontrolcenter.org/statement-on...
[image or embed]
— Nukes of Hazard (@nukesofhazard.bsky.social) February 4, 2026 at 2:04 PM
Daryl G. Kimball, executive director of the Arms Control Association, said Wednesday that "the end of New START requires a more coherent approach from the Trump administration."
"If President Trump and Secretary Rubio are serious, they should make a serious proposal for bilateral (not trilateral) talks with Beijing," he asserted. "Despite Trump’s talk about involving China in nuclear negotiations, there is no indication that Trump or his team have taken the time to propose risk reduction or arms control talks with China since returning to office in 2025."
Kimball continued:
Furthermore, there is no reason why the United States and Russia should not and cannot continue, as [Russian President Vladimir] Putin suggested on September 22, to respect the central limits of New START and begin the hard work of negotiating a new framework agreement involving verifiable limits on strategic, intermediate-range, and short-range nuclear weapons, as well as strategic missile defenses.
At the same time, if he is serious about involving China in “denuclearization” talks, he could and should invite [Chinese President Xi Jinping] when they meet later this year, to agree to regular bilateral talks on risk reduction and arms control involving senior Chinese and US officials.
"With the end of New START, Trump, Putin, and Xi can and must put the world on a safer path by taking commonsense actions to build down the nuclear danger," Kimball added.
Erath lamented that "with New START’s expiration, we have not only lost unprecedented verification measures that our military and decision-makers depended on, but we have ended more than five decades of painstaking diplomacy that successfully avoided nuclear catastrophe."
"Agreements preceding New START helped reduce the global nuclear arsenal by more than 80% since the height of the Cold War,"
he noted. "Now, both Russia and the United States have no legal obstacle to building their arsenals back up, and we could find ourselves reliving the Cold War."
Last week, the Bulletin of the Atomic Scientists’ Science and Security Board advanced its symbolic Doomsday Clock to 85 seconds to midnight, the closest it has ever been to global thermonuclear annihilation, citing developments including failure to extend New START, China's growing arsenal, and Russian weapons tests—to which Trump has vowed to respond in kind.
"The good news is," said Erath, is that "the end of New START does not have to mean the end of nuclear arms control."
"While New START can’t be extended beyond today, Presidents Donald Trump and Vladimir Putin could decide to respect the numerical limits the treaty set on nuclear arsenals," he explained. "They could also resume the treaty’s data exchanges and on-site inspections, in addition to implementing verification measures from other previous arms control treaties."
"Further, they could instruct their administrations to begin immediate talks on a new treaty to cover existing and novel systems and potentially bring in other nuclear powers, like China," Erath continued. "Meanwhile, Congress could—and should—fund nonproliferation and global monitoring efforts while refusing to fund dangerous new nuclear weapons systems."
Last December, US Sens. Ed Markey (D-Mass.) and Jeff Merkley (D-Ore.) and Reps. Don Beyer (D-Va.), John Garamendi (D-Calif.), and Jim McGovern (D-Mass.) reintroduced the bicameral Hastening Arms Limitation Talks (HALT) Act, "legislation outlining a vision for a 21st century freeze on the testing, production, and deployment of nuclear weapons."
"The Doomsday Clock is at 85 seconds to midnight," Markey—who co-chairs the congressional Nuclear Weapons and Arms Control Working Group—said Wednesday ahead of a press conference with HALT Act co-sponsors. "We need to replace New START now."
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'Era of Unconstrained Nuclear Competition' Looms With US-Russia New START Treaty Expiring
“The United States and Russia already have enough deployed nuclear weapons to kill tens of millions of people in an hour and devastate the world," said one expert, warning a lapse will "only make the world less safe."
Feb 03, 2026
If New START expires on Thursday, it will be the first time in decades that the United States and Russia don't have a nuclear arms control treaty, and experts have been sounding the alarm about the arms race that likely lies ahead.
“The expiration of New START would be massively destabilizing and potentially very costly both in terms of economics and security," said Jennifer Knox, a research and policy analyst at the Union of Concerned Scientists' (UCS) Global Security Program, in a Tuesday statement.
"The United States and Russia already have enough deployed nuclear weapons to kill tens of millions of people in an hour and devastate the world," Knox pointed out. "Letting New START lapse would erase decades of hard-won progress and only make the world less safe."
New START was signed in April 2010, under the Obama administration, and entered into force the following February. A decade later, just days into the Biden administration, it was renewed for five years. In 2022, Russia invaded neighboring Ukraine—an ongoing conflict—and the next year, Russian President Vladimir Putin suspended his country's participation in the treaty, though he has not withdrawn.
"The global security environment facing the United States is very different from when New START was first negotiated, but it remains true that bounding an open-ended, costly arms race will still require some form of agreement between Washington and Moscow," said Ankit Panda, the Stanton senior fellow in the Carnegie Endowment for International Peace's Nuclear Policy Program, in a statement.
"The public and lawmakers alike must recognize that we are on the cusp of a fundamentally new nuclear age—one that is more unpredictable, complex, and dangerous than anything we've witnessed post-Cold War," warned Panda, one of the experts participating in a Wednesday briefing about the treaty. "A big risk is that without any quantitative limits or hands-on verification, we'll end up with compounding worst-case-scenario thinking in both capitals, as during the Cold War."
While Putin has halted US inspections of Russian nuclear facilities, he has still proposed extending the treaty for a year. Tara Drozdenko, director of the UCS Global Security Program, said that "abiding by New START for another year would be a win-win-win for the United States, Russia, and the rest of the world... The Trump administration should take swift action to publicly acknowledge that the United States will continue to abide by New START in the interim."
However, US President Donald Trump—who fancies himself as a deal-maker—hasn't expressed an interest in fighting for the pact, telling the New York Times last month that "if it expires, it expires," and "I'd rather do a new agreement that's much better."
Trump has called for China—which has the most nuclear weapons after Russia and the United States, and is building up its arsenal—to be part of a new deal, but Beijing hasn't signaled it will do so. Putin has proposed participation from France and the United Kingdom. The other nuclear-armed nations are India, Israel, North Korea, and Pakistan.
Noting Trump's comments to the Times and aspiration for the Chinese government to join, Jennifer Kavanagh, director of military analysis at the think tank Defense Priorities, declared that "this is wishful thinking–if the administration thinks getting a new 'better' treaty after this one lapses will be easy, they are mistaken."
"New START's end brings few benefits and lots of risks to the United States, especially as Washington tries to stabilize relations with rivals like Russia and China," she said, suggesting that Trump "would be better off hanging on to the agreement he has a little longer before trying to get a better one."
Dmitry Medvedev, a Putin ally who signed the treaty while serving as president and is now deputy chairman of the Russian Security Council, said in a Monday interview with Reuters, TASS, and the WarGonzo project that "our proposal remains on the table, the treaty has not yet expired, and if the Americans want to extend it, that can be done."
"For almost 60 years, we haven't had a situation where strategic nuclear potentials weren't limited in some way. Now such a situation is possible," he noted. "I spent almost my entire life, starting from 1972, under the umbrella of the Strategic Arms Limitation Treaty."
"In some ways, even with all the costs, it is still an element of trust," Medvedev said. "When such a treaty exists, there is trust. When it doesn't, that trust is exhausted. The fact that we are now in this situation is clear evidence of a crisis in international relations. This is absolutely obvious."
Considering New START's potential expiration this week, the Russian leader said that "I don't want to say that this immediately means a catastrophe and a nuclear war, but it should still alert everyone. The clock that is ticking will, in this case, undoubtedly accelerate again."
According to Reuters, he was referencing the Doomsday Clock. Last week, the Bulletin of the Atomic Scientists' Science and Security Board set the symbolic clock at 85 seconds to midnight, the closest it has ever been to global catastrophe, citing various developments, including a failure to extend the treaty, Russian weapons tests, and China's growing arsenal.
"In 2025, it was almost impossible to identify a nuclear issue that got better," Jon B. Wolfsthal, a board member and director of global risk at the Federation of American Scientists (FAS), said last week. "More states are relying more intently on nuclear weapons, multiple states are openly talking about using nuclear weapons for not only deterrence but for coercion. Hundreds of billions are being spent to modernize and expand nuclear arsenals all over the world, and more and more non-nuclear states are considering whether they should acquire their own nuclear weapons or are hedging their nuclear bets."
"Instead of stoking the fires of the nuclear arms competition, nuclear states are reducing their own security and putting the entire planet at risk. Leaders of all states must relearn the lessons of the Cold War—no one wins a nuclear arms race, and the only way to reduce nuclear dangers is through binding agreement to limit the size and shape of their nuclear arsenals," he argued. "Nuclear states and their partners need to invest now in proven crisis communication and risk reduction tools, recommit to preventing the spread of nuclear weapons, refrain from nuclear threats, and pursue a more predictable and stable global security system."
Regarding New START specifically, FAS Nuclear Information Project associate director Matt Korda stressed this week that "we are about to enter an era of unconstrained nuclear competition without any guardrails. Not only will there no longer be anything stopping the nuclear superpowers from nearly doubling their deployed nuclear arsenals, but they would now be doing so in an environment of mutual distrust, opacity, and worst-case thinking."
"While New START was a bilateral agreement between Russia and the United States, its expiration will have far-reaching consequences for the world," he said. "There are no benefits from a costly arms buildup that brings us right back to where we started, but there would be real advantages in pursuing transparency and predictability in an otherwise unpredictable world."
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