Nuclear Issues

Russia's 2022 invasion of Ukraine illuminated the long profound shadow of nuclear weapons over international security. Russia's nuclear threats have rightfully garnered significant attention because of the unfathomable lethality of nuclear weapons. However, the use of such weapons in Ukraine is only one way—albeit the gravest— that Russia could challenge the global nuclear order. Russia's influence extends deep into the very fabric of this order—a system to which it is inextricably bound by Moscow's position in cornerstone institutions such as the Nuclear Non-Proliferation Treaty (NPT) and the International Atomic Energy Agency (IAEA). From withdrawing from key treaties to stymieing resolutions critical of misconduct, Moscow has demonstrated its ability to challenge the legitimacy, relevance, and interpretations of numerous standards and principles espoused by the West.

Joseph Nye considers lessons from his own work on preventing the spread of nuclear technology in the 1970s.

In this Q&A, Joseph S. Nye talks about his advice for the interim and future president of Harvard in the wake of Claudine Gay's resignation, which countries should be highest on our radar to prevent the threat of nuclear war, what role the U.S. should play in the Russia-Ukraine war, the significance of U.S. alliances in the Middle East, and more.

Among the many issues surrounding China’s ongoing military modernization, perhaps none has been more dramatic than its nuclear weapons program. For decades, the Chinese government was content to maintain a comparatively small nuclear force. As recently as 2020, China’s arsenal was little changed from previous decades and amounted to some 220 weapons, around five to six percent of either the U.S. or Russian stockpiles of deployed and reserve warheads.

Belfer Center experts on the U.S.-China relationship and Middle East issues shared thoughts on the significance of the unexpected Iran-Saudi Arabia agreement brokered by China. 

Joseph Nye writes that even at this early stage, there are at least eight lessons— some old, some new— that the world is learning (or relearning) from the war in Ukraine.

Juliette Kayyem writes that deliberately accepting some risks, and then being prepared when disaster strikes, will serve human societies better than pretending that perfect safety is achievable. We cannot prevent an earthquake or a tsunami, but we have control over how much death and destruction it causes.

Hamidreza Azizi and Nicole Grajewski analyze Russian Foreign Minister Sergei Lavrov's recent demands  for written guarantees that Western sanctions over Ukraine "will by no means affect our right to free and full-fledged trading, economic, investment, military and technical cooperation with Iran."

States frequently acquire proof that other states have violated norms. Yet, existing theories do not fully explain how states wield such proof to coerce wrongdoers. Four case studies of nuclear proliferation probe a novel theory of how states coerce norm violators by concealing, sharing privately, or publicizing proof of guilt.

Aditi Verma and Denia Djokić call for rethinking our collective approach to the benefits and risks of nuclear technology—a call that is crucial and timely. As humanity confronts the catastrophic consequences of climate change, questions related to the viability of nuclear energy to achieve a decarbonized world abound. The authors, however, push the boundaries of the current conversation by arguing that what is required to make nuclear energy “viable” for the twenty-first century is much more than just an exercise in technological development.