New START nuclear arms control treaty between the United States and Russia expires 05Feb2026

[littlemissmartypants]

The last remaining nuclear arms control treaty between the United States and Russia is set to expire on Thursday. The end of "New START" marks the first time in more than five decades that Washington and Moscow have no formal limits on their nuclear arsenals. What does this mean for global security — and for already strained U.S.-Russian relations?

Walter Isaacson speaks with Kay Bailey Hutchison, U.S. Ambassador to NATO during Trump's first term, about what's at stake.

[LetMyPeopleVote]

1. MaddowBlog-As the New START treaty expires, is Trump prepared for what happens next?

The president said in July that New START is “not an agreement you want expiring,” adding that it would be “a big problem for the world.” Then it expired.

Seven months ago, Trump said that the New START treaty is “not an agreement you want expiring,” adding that it would be “a big problem for the world.”

Yesterday, it expired.
www.ms.now/rachel-maddo...

— Steve Benen (@stevebenen.com) 2026-02-05T18:22:42.230Z

https://www.ms.now/rachel-maddow-show/maddowblog/as-the-new-start-treaty-expires-is-trump-prepared-for-what-happens-next

The terms of the agreement lasted 10 years, though the policy included the option for a five-year extension, which Joe Biden embraced.

That kept the policy intact through Feb. 4, 2026. It’s now Feb. 5, 2026. The Washington Post reported:

For decades, the world’s two largest nuclear arsenals have been constrained by a series of treaties. But that changed Thursday, when the last remaining nuclear arms limitation treaty between the United States and Russia, known as New START, expired.

Russia said in September it is willing to continue adhering to the central limitations of the treaty for at least another year, if Washington does likewise — but the Trump administration has yet to officially respond to the offer.

This wasn’t inevitable. In fact, it was easy to predict the opposite outcome after Trump said last summer that New START is “not an agreement you want expiring,” adding that it would be “a big problem for the world.”....

Nevertheless, with the expiration of New START, what happens now? Georgia Cole, a research analyst at British foreign policy think tank Chatham House, told the Post that in the absence of the policy, the U.S. and Russia could build up their nuclear warheads and launchers “unchecked.”

“This would raise the risk of miscalculation, accidents and unintended escalation — especially in a crisis,” she added. “It would also encourage China to continue accelerating its nuclear buildup to reach parity.”

Reuters reported that U.S. and Russian officials might yet agree to temporarily maintain the terms of New START despite its expiration, which would likely ease the fears of many international observers.

But in the meantime, amid growing uncertainty, many are wondering whether the nuclear arms control era is over, and the underlying question needs an answer from a White House that barely seems to care.