Uploaded February 2026 | Updated September 2026, 2 weeks ago
New Strategic Arms Reduction Treaty (START), the last standing bilateral nuclear arms control agreement between the United States and Russia, expired on February 5th. With New START’s end and absent any successor agreement, remaining guardrails on nuclear weapons proliferation would lapse and pave the way for an unrestrained nuclear arms race between the United States, Russia, and China.
What is the likely road ahead, and how do we approach the pragmatic imperative of preventing an expensive and destabilizing nuclear arms race? The Quincy Institute held a discussion of the history of nuclear great power cooperation and how to revitalize it in this current moment. It featured QI non-resident fellows Pavel Devyatkin and Ariel Petrovics, authors of two new QI’s briefs on nuclear cooperation respectively: “Strategic Prudence and Extending New START” and “Prospects and Problems for Reinvigorating Superpower Nuclear Cooperation”. They were joined by Thomas Countryman, former under secretary for Arms Control and International Security and assistant secretary for International Security and Nonproliferation (ISN). Marcus Stanley, director of studies at the Quincy Institute, will moderate the conversation.
*Download the full webinar transcript here*:
quincyinst-2.s3.amazonaws.com/wp-content/uploads/2026/02/10122302/Extending-New-START-and-Revitalizing-Great-Power-Nuclear-Cooperation.docx-1.pdf
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Quincy Institute is an independent, nonprofit think tank.
Help fund our research: quincyinst.org/donations
Read our reporting: ResponsibleStatecraft.org
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New Strategic Arms Reduction Treaty (START), the last standing bilateral nuclear arms control agreement between the United States and Russia, expired on February 5th. With New START’s end and absent any successor agreement, remaining guardrails on nuclear weapons proliferation would lapse and pave the way for an unrestrained nuclear arms race between the United States, Russia, and China.
What is the likely road ahead, and how do we approach the pragmatic imperative of preventing an expensive and destabilizing nuclear arms race? The Quincy Institute held a discussion of the history of nuclear great power cooperation and how to revitalize it in this current moment. It featured QI non-resident fellows Pavel Devyatkin and Ariel Petrovics, authors of two new QI’s briefs on nuclear cooperation respectively: “Strategic Prudence and Extending New START” and “Prospects and Problems for Reinvigorating Superpower Nuclear Cooperation”. They were joined by Thomas Countryman, former under secretary for Arms Control and International Security and assistant secretary for International Security and Nonproliferation (ISN). Marcus Stanley, director of studies at the Quincy Institute, will moderate the conversation.
*Download the full webinar transcript here*:
quincyinst-2.s3.amazonaws.com/wp-content/uploads/2026/02/10122302/Extending-New-START-and-Revitalizing-Great-Power-Nuclear-Cooperation.docx-1.pdf
###
Quincy Institute is an independent, nonprofit think tank.
Help fund our research: quincyinst.org/donations
Read our reporting: ResponsibleStatecraft.org
Twitter: https://x.com/QuincyInst
TikTok: tiktok.com/quincyinst
Facebook: facebook.com/quincyinst
Instagram: instagram.com//quincyinst
Website: quincyinst.org
