What is the Future of the Nuclear Non-Proliferation Treaty?

The Nuclear Non-Proliferation Treaty is the "glue" that holds the entire global nuclear security architecture together — but is it fraying?

I spent much of last month at the United Nations covering the review conference of the Nuclear Non-Proliferation Treaty. This is a conference of all members of the NPT that happens every five years. Countries come together to assess progress toward the treaty's goals and plot ways to enhance the treaty's impact and effectiveness in preventing the spread of nuclear weapons, reducing nuclear stockpiles, and supporting the peaceful uses of nuclear energy.

That's the idea. But on Friday, as the conference gaveled to a close, the 191 states parties could not come to an agreement. The conference failed to achieve consensus on a way forward for the NPT. And this failure comes amid a host of other challenges in the nuclear security landscape: China's rapid buildup; the end of all bilateral arms control agreements between the United States and Russia; the U.S.-Israel war on Iran; Russia's war on Ukraine; the increasing integration of AI into nuclear weapons systems; and more and more countries openly suggesting that nuclear weapons may be a solution to their security challenges.

My interview guest today is Alexandra Bell, head of the Bulletin of the Atomic Scientists — the organization perhaps best known for the Doomsday Clock. We kick off by discussing what the NPT has achieved since it entered into force more than 50 years ago, and what this major conference at the United Nations suggests about the state of global nuclear security today?

This episode is produced in partnership with Ploughshares, a foundation committed to reducing and ultimately eliminating nuclear threats.