Nuclear Issues

While prosecuting its invasion of Ukraine, Russia has relied heavily on nuclear threats, turning the war in Ukraine into a dangerous nuclear crisis with profound implications for the global nuclear order and its two constitutive systems of nuclear deterrence and nuclear restraint. These two interconnected systems, each aiming to manage nuclear possession and reduce the risk of nuclear use, are at once complimentary and contradictory. While tensions between these systems are not new, the war in Ukraine exacerbates them in unprecedented ways. The system of nuclear deterrence seems to be proving its worth by inducing restraint on Russia and NATO, while the system of restraint is undermined by demonstrating what happens to a country not protected by nuclear deterrence. The latter lesson is particularly vivid given Ukraine’s decision to forgo a nuclear option in 1994 in exchange for security assurances from nuclear powers. Russia’s use of nuclear threats as an enabler for escalation and the specter of Russian tactical nuclear use against Ukraine goes well beyond its declared nuclear doctrine. The outcome of the war in Ukraine thus has critical importance for deciding the value of nuclear weapons in global security architecture and for resolving the conundrum between the systems of deterrence and restraint.

For months, evidence has accumulated that North Korea may be preparing its seventh nuclear explosive test. Continuous warnings by analysts and the media about this possibility are a sobering reminder that Pyongyang's continued pursuit of a larger nuclear arsenal remains a challenge for the Non-Proliferation Treaty and the nonproliferation regime. This continues to be the case even as the public and leaders around the world have largely shifted their attention to the nuclear dimensions of the war in Ukraine.

In October 2020, a parade celebrating the 75th anniversary of the founding of the Korean Workers Party showcased a range of new weapons systems, including a new large intercontinental ballistic missile. The same weekend saw the release of a fascinating documentary film directed by provocative Danish filmmaker Mads Brügger, entitled The Mole: Undercover in North Korea. The film consists of footage—much of it filmed undercover—that was shot over a period of 10 years. It tells the story of a retired Danish chef’s infiltration of the Korean Friendship Association (KFA), an international organization that seeks to promote the ideology, history, and culture of the Democratic People’s Republic of Korea (DPRK) and defend the country from its critics. The story culminates in the exploration of plans for a series of sanctions-busting deals: constructing an underground arms factory on a Ugandan island, shipping oil to North Korea, and supplying arms to unspecified customers of Pyongyang through a private arms dealer. This review essay seeks to contextualize the film’s contents, consider the insights it offers into North Korea’s arms dealing, and examine a number of questions that arise.

Following the June 16 Biden-Putin Summit, several Belfer Center experts shared their thoughts on how the meeting might impact the U.S.-Russia relationship. 

William d'Ambruoso explains why high-level engagement, built on a baseline of deterrence, lessens the chances of war and opens the way for future cooperation in North Korean–U.S. relations.

Ten years on, the lessons learned from the Fukushima Dai-ichi Nuclear Power Plant accident continue to focus on improving safety culture and regulatory oversight. However, the executive decisions that failed to prevent the disaster also demonstrate the necessity to re-examine the legal entities most often relied on for producing nuclear power: corporations.

In this issue, we highlight five new books by Belfer Center members.

Rebecca Davis Gibbons and Stephen Herzog provide an update on current efforts to eliminate nuclear weapons. 

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.