Nuclear Issues

This year's G7 summit in Hiroshima sees nuclear disarmament and non-proliferation sitting high on the agenda, amid rising tensions between the nuclear states and an increasingly divided international order.  Six contributors offer their analyses, including the Belfer Center's Mayumi Fukushima.

Abolghasem Bayyenat and Sayed Hossein Mousavian advise the United States and Iran to aim for reaching a modus vivendi that keeps their political conflict within manageable limits. Otherwise, another round of dangerous mutual escalation in the illusory hope of building leverage and extracting more concessions from each other is inevitable.     

While U.S. sanctions have caused Iran’s economy major challenges and limited Iran’s access to financial resources, they have not succeeded in changing Tehran’s behavior regarding its nuclear program. Indeed, Iran has not offered additional concessions. Instead, it has engaged in its own leverage-building strategy by ramping up its nuclear activities, missile program, and regional activities. Iran is not only closer to having the capacity to build a bomb, but even the political discourse of key officials on whether to cross that threshold has been shifting.

In the highly charged political atmosphere surrounding nuclear initiatives in the Middle East, legitimate concerns are sometimes blown out of proportion, with potentially problematic results. This has been the case with recent coverage and commentary on Saudi Arabia’s nuclear activities, which have been characterized by a degree of what can be described as “threat inflation.”

Horizontal nuclear proliferation presents what is sometimes referred to as the "Nth country problem," or identifying which state could be next to acquire nuclear weapons. Nuclear fuel cycle technologies can contribute to both nuclear power generation and weapons development. Consequently, observers often view civilian nuclear programs with suspicion even as research on nuclear latency and the technological inputs of proliferation has added nuance to these discussions. To contribute to this debate, the author puts forth a simple theoretical proposition: En route to developing a civilian nuclear infrastructure and mastering the fuel cycle, states pass through a proliferation "danger zone."

The Bulletin of Atomic Scientists has published a document from the Pugwash Conference on Science and World Affairs concerning nuclear problems and tensions in the time of COVID-19. The document has been co-signed by a large number of Pugwash colleagues and personalities.

Matthew Bunn and Steven E. Miller reflect on the late Martin B. Malin, who lost his battle with cancer in April 2020.

Recent scholarship on nuclear proliferation finds that many forms of nuclear assistance increase the odds that recipient states pursue nuclear weapons programs. While these studies may help us understand select cases of proliferation, they overshadow the role of nuclear supply in bolstering global nonproliferation efforts. After the risks of nuclear assistance became well-known following India’s nuclear explosion in 1974, most major suppliers conditioned their assistance on recipients joining nonproliferation agreements. Case studies of states’ decision-making regarding these agreements illustrate how the provision of nuclear technology has been an effective tool in persuading states to join such agreements, the most important of which is the Treaty on the Non-Proliferation of Nuclear Weapons (NPT). By joining the NPT, states strengthen the global nonproliferation regime and increase the costs of any potential future decision to proliferate. The offer of nuclear assistance has done far more to bolster global nuclear nonproliferation efforts than recent research suggests.

Mariana Budjeryn recounts Ukraine's surrender of its inherited nuclear arsenal and the signing of the Budapest Memorandum by the United States, United Kingdom, and Russia. While the memorandum did not specify the assistance Ukraine was to receive if it became a victim of aggression, Ukrainians were led to believe that the United States would uphold its commitments to their security in the time of need, as Ukraine upheld its commitment to nuclear nonproliferation norms.

While most observers focus on the spiral of U.S. pressure and Iranian defiance, the situation has broader implications for nuclear programs elsewhere — specifically, whether Saudi Arabia could follow in Iran’s footsteps