Expert

The New York Times

Putin Had High Hopes for Trump. They Have Been Dashed.

Unable to get from Mr. Trump what he wants in Ukraine, Mr. Putin will fight on, sinking Russia’s resources ever more deeply into his calamitous war.

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After Nuclear Deterrence: Insights and Uncharted Frontiers

Dr. Stephen Herzog and colleagues provide insights into the recently completed MacArthur Foundation-funded Beyond Nuclear Deterrence Working Group.

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Rethinking the Deterrence-Disarmament Dichotomy: The Complex Landscape of Global Nuclear Weapons Preferences

Dr. Stephen Herzog and co-authors conducted––and published research on––the largest academic public opinion survey on attitudes toward nuclear weapons to date.

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The Limits of Russian Power

Why Putin Isn’t Thriving in Trump’s Anarchic World

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Dual-Track Nuclear Disarmament: Institutional Design of the Treaty on the Prohibition of Nuclear Weapons

Dr. Stephen Herzog publishes an article that examines and answers common objections to the Nuclear Ban Treaty.

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Atomic Backfires: When Nuclear Policies Fail

Dr. Stephen Herzog is the lead editor of a newly published edited volume on counterproductive consequences in nuclear politics.

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Nonproliferation Review Publishes First Special Issue on “Beyond Nuclear Deterrence”

The Nonproliferation Review features a special collection of articles by the Harvard–MacArthur Beyond Nuclear Deterrence Working Group.

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CNS AI and Nuclear Proliferation Research Wins Best Paper 2025 Award

Dr. Stephen Herzog’s work is recognized by the Society for Risk Analysis.

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The IAEA’s “Significant Quantity:” What It Is and What It Isn’t

The IAEA’s Significant Quantity (SQ) is a politically sensitive, approximate amount of nuclear material used as a baseline for determining inspection goals and frequency under the NPT, despite being often misunderstood as the minimum required for a weapon.

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Getting Beyond Nuclear Deterrence: A Research Agenda

Dr. Stephen Herzog and co-authors lay out research directions for thinking about a durable nuclear-weapons-free world.