Reports & Papers

203 Items

Ukrainian troops examine the destruction caused by Russian shelling in Toretsk, Donetsk Oblast.

Wikimedia Commons, National Police of Ukraine

Report - American Academy of Arts & Sciences

The Altered Nuclear Order in the Wake of the Russia-Ukraine War

In this American Academy of Arts and Sciences study, Rebecca Davis Gibbons, Stephen Herzog, Wilfred Wan, and Doreen Horschig unpack the challenges to the global nuclear order posed by the Russian war against Ukraine. On February 24, 2022, Russia invaded nonnuclear-armed Ukraine and leveraged threats with its nuclear arsenal as a “shield” to deter third-party intervention. The well-publicized horrors on the ground in Ukraine are, unfortunately, not the only consequences of Russia’s full-scale invasion of its neighbor. The war is having unmistakable effects on how governments, scholars, and the public think about nuclear arms. Not only has Moscow reintroduced the world to the often-unsavory realities of nuclear deterrence, but its suspension of the New Strategic Arms Reduction Treaty (START) and deratification of the Comprehensive Nuclear-Test-Ban Treaty (CTBT) have been setbacks for arms control and disarmament. Meanwhile, vulnerable states around the globe may be further incentivized to develop nuclear weapons or seek protection from nuclear-armed patrons to avoid being invaded like Ukraine. Given these changing geopolitical circumstances, how might the Russian war on Ukraine affect the global nuclear order? The authors in this publication conclude that the United States and the broader international community must now more seriously engage with alternatives to traditional arms control, nonproliferation, and disarmament endeavors. Specifically, the authors discuss the increasing prominence of approaches such as the Treaty on the Prohibition of Nuclear Weapons (TPNW)—popularly known as the Nuclear Ban—and risk reduction measures. They assess whether these initiatives can have an impact in reducing nuclear dangers. Additionally, they examine temptations for states to pursue more forceful counterproliferation measures and describe the risks of doing so.

Senior officials from around the world, including IAEA DG Rafael Mariano Grossi, together at an International Gender Champions meeting in Vienna in March 2020.

Dean Calma/IAEA

Report - Institute for Replication

Gender Analysis and the Treaty on the Prohibition of Nuclear Weapons: A Response to Daarstad, Park, and Balogh

| Dec. 01, 2023

Herzog, Baron, and Gibbons (HBG) thank Haley Daarstad, RyuGyung Park, and Timea Balogh for replicating their 2022 short article in The Journal of Politics. In that article, HBG tested the malleability of U.S. public support for nuclear disarmament, specifically in the context of the 2017 Treaty on the Prohibition of Nuclear Weapons (TPNW). Their survey experiment reveals that––despite majority public support for eliminating nuclear weapons––Americans’ backing of the TPNW can be significantly attenuated by exposure to elite and group cues opposing the treaty. The resultant article has received considerable attention from policymakers and anti-nuclear activists alike. Daarstad, Park, and Balogh (DPB) offer three main substantive points of comment on HGB's article. First, DPB indicate that the results successfully replicate and note that they “do not find any coding errors that undermine the authors’ analysis or conclusions.” Second, DPB show that the findings also replicate when partisan leaners are coded as political Independents. Finally, and most interestingly, DPB conduct gender-based subgroup analysis and show that there are heterogenous treatment effects among male and female respondents in our sample. HBG address each of these points in turn.

U.S. and Iranian negotiators sit around a cured table as media with cameras and microphones crowd the foreground.

Joe Klamar/Pool Photo via AP

Paper - Belfer Center for Science and International Affairs, Harvard Kennedy School

Nuclear About-Face: Examining the Role of Collective Face Concerns in Iran's Nuclear Decision-Making

| July 2023

By looking beyond solely Iran’s security motivations, this paper by Sahar Nowrouzzadeh seeks to inform more holistic negotiation strategies that can potentially influence Iran’s nuclear decision-making in a manner more favorable to U.S. interests.

U.S. Secretary of Defense William J. Perry (right) Ukraine Minister of Defense Valeriy Shmarov (center) and Russian Federation Minister of Defense General of the Army Pavel Grachev (left)

Public Domain/Petty Officer 1st Class Todd P. Cichonowicz, U.S. Navy

Paper - Hague Centre for Strategic Studies

Hard Times for Arms Control: What Can Be Done?

| February 2022

The world has grown more dangerous but also less open to arms control measures that could limit some of the dangers. What can be done? Steven E. Miller offers a tour de force overview of both dismal and hopeful trends within arms control over the past decades, in this first paper of a new HCSS series on Arms Control.

Tomas Roggero via Flickr

Tomas Roggero via Flickr

Report Chapter - Women’s International League for Peace and Freedom

Assuring Destruction Forever: 2022 Edition

| January 2022

Under the guidance of its self-defence nuclear strategy, China will continue to modernise its nuclear force in order to maintain a reliable second-strike retaliatory capability. China’s nuclear weapon modernisation has been responsive to the advances of military capabilities of other countries, particularly the US. As Hu Side emphasised, “The sole purpose for China to maintain a limited nuclear counterattack force is to deter a potential nuclear strike. However, the development of US missile defense and the long-rang strike capability with high accuracy to target mobile missiles is in practice to decrease the effectiveness of Chinese nuclear deterrence. Thus, it surely leads to Chinese attention."

YJ-18 missiles on display (Salah Rashad Zaqzoq/Wikimedia Commons).

Salah Rashad Zaqzoq/Wikimedia Commons

Report Chapter - International Network of Engineers and Scientists for Global Responsibility

China's Nuclear Weapons Strategy and Modernization Program

| Fall 2021

Recently published documents, news reports, and other sources of open source information indicate that China is accelerating its current nuclear force modernization programme. It is clear that it is driven largely in response to the growing United States (U.S.) missile defense program, which China perceives as a threat to its minimum credible deterrence. While China is not altering its nuclear doctrine, it believes that it needs to enhance the reliability, survivability, and effectiveness of its retaliatory capability in response to a first-strike. In addition to expanding the size of its nuclear arsenal, it is enhancing its delivery capabilities, for example, by increasing the number of ICBMs and making them more sophisticated. It is building more Multiple Independently Targetable Reentry Vehicle (MIRV) warheads as well as a new class of ballistic missile submarines. China’s ongoing nuclear modernization aims to increase the survivability, reliability, safety, and penetration capability of its small nuclear arsenal and thereby assures a limited, reliable, and effective counterattack capability that will deter a nuclear first-strike. China’s nuclear modernization program will likely continue to be guided by its nuclear policy, which is characterized by a no-first-use pledge and a commitment to “minimum nuclear deterrence.” Finally, while China supports the total elimination of nuclear weapons, it does not believe it is in China’s interest to participate in discussions about nuclear disarmament until the U.S. and Russia reduce their arsenals to one thousand each, or lower.

Report - Belfer Center for Science and International Affairs, Harvard Kennedy School

A Decade of Diplomacy: The Future of Diplomacy Project at 10

For this Future of Diplomacy Project anniversary publication, we have asked many of our former fellows to reflect on the geostrategic challenges ahead for diplomacy and statecraft and to offer their advice to the younger generation of rising leaders on the opportunities and challenges for diplomacy in the decade ahead.

Israel's Prime Minister Benjamin Netanyahu shows an atomic warehouse in Teheran during his address the 73rd session of the United Nations General Assembly, at U.N. headquarters, Sept. 27, 2018.

AP/Richard Drew

Report - Iran Watch

Iran's Atomic Archive: Lessons Learned for Export Controls and Inspections

| August 2021

The Wisconsin Project on Nuclear Arms Control hosted two roundtables—in September 2019 and March 2021—to identify lessons that should be drawn from the archive of Iranian documents seized by Israel in 2018, related to the effectiveness of export controls, monitoring measures such as international inspections, and other efforts to prevent material and expertise from reaching programs to develop nuclear weapons. Informed by these lessons, the group sought to develop a set of findings and recommendations to support the policymaking and monitoring communities.

A missile on display during a military parade in Moscow's Red Square in 2016.

Wikimedia Commons

Report Chapter - American Academy of Arts & Sciences

The Rise and Decline of Global Nuclear Order?

| April 2021

The first half century of the nuclear age witnessed the gradual construction of a global nuclear order designed to mitigate nuclear dangers, inhibit arms racing, and prevent the spread of nuclear weapons to additional states. Spurred by the experiences, the dangers, the crises, the near misses, and the frightening risks on display in the early years of the Cold War, sustained efforts were made, in McGeorge Bundy’s vivid phrase, “to cap the volcano.” The time had arrived, Bundy wrote in 1969, for the two great nuclear superpowers “to limit their extravagant contest in strategic weapons,” a contest that had “led the two greatest powers of our generation into an arms race totally unprecedented in size and danger.” In the subsequent twenty-five years after Bundy’s appeal, an increasingly elaborate and institutionalized arms control process produced, with many ups and downs, a detailed web of constraints on the nuclear behavior of the superpowers. The articulated goal was to stabilize the superpower nuclear balance by reinforcing mutual deterrence. The vast nuclear arsenals of the superpowers, however, were not the only source of nuclear danger. In a world in which the number of states armed with nuclear weapons was slowly growing and many additional states had interest in acquiring such weapons or the technology to produce them, there was reason, as Albert Wohlstetter warned in 1961, to be “concerned with the enormous instabilities and dangers of a world with many nuclear powers.” Such a world—“life in a nuclear armed crowd”—Wohlstetter wrote in a later famous study, was widely believed to be “vastly more dangerous than today’s world.” The desire to prevent this unattractive world led to the negotiation of the Nuclear Nonproliferation Treaty (NPT), which entered into force in 1970, and to the subsequent development of an associated regime intended to create legal and technical barriers to the spread of nuclear weapons. Thus, in reaction to the major perceived dangers of the nuclear age, there emerged what Lawrence Freedman calls the “twin pillars” of the global nuclear order: mutual stability in the major nuclear rivalry and nonproliferation to inhibit or prevent the spread of nuclear weapons to additional states.