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The Last Nuclear Arms Control Agreement Between the US and Russia Just Expired. What's Next?

16 Feb 2026 · 27 min

The New START treaty, signed by the United States and Russia in 2010, limited both countries to 1,550 deployed strategic warheads, placed restrictions on how those weapons could be deployed, and included strong verification mechanisms to ensure compliance. On February 6, 2026, that treaty formally expired. And now, for the first time in decades, there is no bilateral nuclear arms agreement between the world's two foremost nuclear powers.

Joining me today to discuss the implications of the expiration of the New Strategic Arms Reduction Treaty is Corey Hinderstein, Vice President for Studies at the Carnegie Endowment for International Peace. We kick off by discussing how New START built on previous arms control treaties between the United States and Russia, what it means that no such treaty now exists—and why China's rapid nuclear buildup adds a vexing new challenge to future arms control efforts.

There are very few media outlets these days that consistently cover nuclear security issues, despite the existential risks posed by nuclear weapons. I'm glad to bring you this episode. If you care about the future of humanity and want to help me continue producing thoughtful conversations like this, please become a paid subscriber. I'm running a subscription drive this month—and believe me when I say every single new paid subscriber makes a real difference.

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