
The global security environment is experiencing monumental strains, including from the weakening of long-held norms, worsening relations among many nations, clear violations of the rules-based international order as exemplified by Russia’s second, and devastating, invasion of a sovereign Ukraine, and mounting strains from a multiyear pandemic, economic strains, the worsening effects of climate change, and more.
In recent years these issues have shaped and been shaped by severe setbacks to nuclear arms control and the world stepping toward a new nuclear arms race. The danger is rising that nuclear weapons will be used, and that their use at so-called “lower levels” is becoming more palatable. This risk is being fueled by multiple nations seeking to expand the types of nuclear weapons they possess and design new capabilities into their nuclear arsenals that are likely to increase tensions and opportunities for miscalculation.
As such, the Janne E. Nolan Center on Strategic Weapons (the Nolan Center) is working to help revert this global growth in nuclear weapons risks. For the United States, the Nolan Center is advancing ideas for a smarter path on nuclear policy and plans that should strengthen deterrence while reducing the risks of nuclear war. The Nolan Center team is also working in cooperation with other nations and international organizations to advance shared definitions of nuclear strategic stability in the multipolar world and common understandings of the responsibilities of nuclear weapons-capable states.
Since 2018, The Nolan Center staff have also conducted analysis and Track 1.5 dialogues to develop specific new steps to drive the future of arms control—-and details regarding how they might be implemented in the years ahead. As the international landscape continues to evolve, successful arms control in the 21st Century will require new approaches grounded in the mutual security interests of countries involved. Working in collaboration with governments and other think tanks from around the world, the Nolan Center is developing new arms control concepts that countries may pursue together with special attention to classes of nuclear weapons that carry the highest risks of ambiguity, escalation, and altering strategic calculations.
CSR’s continued work is grounded in a strategic vision for nuclear-armed nations to strengthen nuclear strategic stability while pursuing decreasing reliance on and possession of nuclear weapons over time.
THE STRATEGIC VISION

- A Practical Strategy for Nuclear Risk Reduction and Disarmament: Fulfilling the Code of Nuclear Responsibility By Rear Admiral John Gower, CB OBE and Christine Parthemore, Council on Strategic Risks, April 2021
- Improving Nuclear Strategic Stability Through a Responsibility-Based Approach: An Updated Platform for 21st Century Arms Control (a predecessor of the April 2021 briefer linked above), By Rear Admiral John Gower, CB OBE, Council on Strategic Risks, October 2019
Specific Steps To Strengthen Nuclear Strategic Stability
The following resources expand upon the strategic vision noted above, and detail how specific steps might proceed along the path it sets forward.
Nuclear Signaling Between NATO and Russia, By Rear Admiral John Gower, CB OBE, European Leadership Network, October 2018
The Problem of Blurring Conventional and Nuclear Deterrence, By Christine Parthemore, In Perspectives on Nuclear Deterrence in the 21st Century, Chatham House, April 2020
The Dangerous Illogic of Twenty-First-Century Deterrence Through Planning for Nuclear Warfighting, By Rear Admiral John Gower, CB OBE, Carnegie Endowment for International Peace, March 2018
The Ambiguity Challenge, By Christine Parthemore, Bulletin of the Atomic Scientists, May 2017
The Benefits of Further Declarations of Restraint from the Use of Nuclear Weapons, By Rear Admiral John Gower, CB OBE, Council on Strategic Risks, October 2021
Nuclear Weapon Sole Purpose: The Strongest Future for U.S. National Security and Global Stability, By Hon. Andrew Weber and Rear Admiral John Gower, CB OBE, Council on Strategic Risks, January 2021
Here Is The Nuclear Triad We Actually Need For Deterrence, By Hon. Andrew Weber, The Hill, May 2021
If Biden Reviews Nuclear Weapons Plans, Focus on New & Low-Yield Weapons, By Christine Parthemore, Council on Strategic Risks, January 2021
Are U.S. Nuclear Sea-Launched Cruise Missiles Necessary? A Japanese Security Analysis, By Dr. Michiru Nishida, Council on Strategic Risks, February 2022
The Next Great Idea in Arms Control: An End to Nuclear Sea-Launched Cruise Missiles, By Jasmine Owens and contributing authors Christine Parthemore and Hon. Andrew Weber, Council on Strategic Risks, February 2021
The Next Great Idea in Nuclear Arms Control: Putting the “N” Back in INF, By Dr. Natasha Bajema and Christine Parthemore, Council on Strategic Risks, February 2021
Biden-Xi Signal Opening to Explore Strategic Stability Talks, By Christine Parthemore, Council on Strategic Risks, November 2021
Nuclear Weapons & US Alliances in the Next Administration, By Christine Parthmore, Council on Strategic Risks, November 2020
Verifying Absence of Nuclear Weapons: Looking Back To Look Forward During the UN First Committee Meetings, By Christine Parthemore, Council on Strategic Risks, October 2020
Is Change Coming? Smartly Reshaping and Strengthening America’s Nuclear Deterrent, By Christine Parthemore and Hon. Andrew Weber, War on the Rocks, October 2020
“Where do we go after the INF Treaty?” Possible Options, Council on Strategic Risks, By Amb. Nobuyasu Abe, January 2020
Cruise Control: The Logical Next Step in Nuclear Arms Control?, By Hon. Andrew Weber and Christine Parthemore, Journal for Peace and Nuclear Disarmament, October 2019
The Future of Arms Control is Global: Reconsidering Nuclear Issues in the Indo-Pacific, By Hon. Andrew Weber and Christine Parthemore, War on the Rocks, February 2019
Smarter US Modernization, without New Nuclear Weapons, By Hon. Andrew Weber and Christine Parthemore, Bulletin of the Atomic Scientists, January 2019
Revive Arms Control and Start with Nuclear-Armed Cruise Missiles, By Sico van der Meer and Christine Parthemore, War on the Rocks, June 2016

PODCASTS AND VIDEOS
- Nuclear Arms Race, Featuring Christine Parthemore and Rear Admiral John Gower, CB OBE, Back Story with Dana Lewis,
- On the Verge – Reimagining Arms Control, Featuring Hon. Andrew Weber and Rear Admiral John Gower, CB OBE, Council on Strategic Risks, January 2021
- On the Verge – Sole Purpose Nuclear Doctrine, Featuring Hon. Andrew Weber and Rear Admiral John Gower, CB OBE, Council on Strategic Risks,
- Nuclear START, Featuring Hon. Andrew Weber and Hon. Rose Gottemoeller, Back Story with Dana Lewis,
- Cruise Control: Can We End Nuclear-Armed Cruise Missiles Globally?, Featuring Christine Parthemore and the Hon. Andrew Weber, Vienna Center for Disarmament and Non‑Proliferation, April 2017
OTHER RESOURCES
- North Korea’s Wake-Up Call on Cruise Missile Risks, By Christine Parthemore and Rear Admiral John Gower, CB OBE, The Hill,
- The US Must Separate Nuclear Deterrence from Biological Weapons, By Christine Parthemore and Hon. Andrew Weber, DefenseNews,
- Toward a Modernized Nuclear Triad: Dangerously Expensive or Vital to Deterrence?, By Dr. Natasha Bajema, Council on Strategic Risks,
- Connecting Nuclear and Climate Policy in the Biden Administration, By Christine Parthemore and Andrea Rezzonico, Council on Strategic Risks,
- Call to Action on the Treaty on the Non-Proliferation of Nuclear Weapons, By members of the CSR Working Group on Climate, Nuclear, and Security Affairs, Council on Strategic Risks,
- Time to Internationalize the Dialogue on Nuclear Armed Cruise Missiles, By Christine Parthemore and Vikram J Singh, War on the Rocks,
- Mr. President, Kill the New Cruise Missile, By William J. Perry and Hon. Andrew Weber, Washington Post, October 2015