Nuclear Issues

David Kearn argues that the idea that the first use of nuclear weapons since 1945 would be by the United States in the defense of Taiwan against a conventional Chinese invasion would have significant, negative, and long-lasting, diplomatic ramifications. It is difficult to fathom the myriad potential consequences, but U.S. nuclear weapon use would almost certainly shatter the non-proliferation regime as a functioning entity, incentivize states (including China) to acquire or improve their existing nuclear arsenal, and damage America's standing globally.

David Kearn argues that even in the absence of restrictive resource and budgetary constraints, a focus on identifying and achieving concrete objectives that will position the United States and its allies to effectively deter aggression in critical regional flashpoints should be the priority given the stressed nature of the defense industrial base and the nuclear enterprise.

Kari A. Bingen and Heather W. Williams write that if Russia plans to deploy nuclear weapons in space to target satellites, the threat is definitely serious—and the U.S. should act fast.

David W. Kearn argues that deployment of nuclear weapons cannot rectify a perceived imbalance in conventional forces in the western Pacific.

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.

Earlier this month, South Korean President Yoon Suk-yeol set off alarms. In an off-the-cuff remark, he warned that Seoul might need to develop nuclear weapons—or demand redeployment of U.S. nuclear arms to the Korean Peninsula—to counter North Korean nuclear threats. In doing so, Yoon spotlighted a popular view once reserved for hawkish commentators, defense intellectuals, and former military officials. Keeping nuclear weapons out of South Korea will ultimately be a U.S. responsibility that requires addressing both the deteriorating security environment and the domestic drivers underlying Yoon’s statement.

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.

How robust is public support for extended nuclear deterrence in patron and client states? Recent studies have improved scholarly understanding of US public opinion about nuclear weapon use against non-nuclear adversaries. Yet, there is limited knowledge of public attitudes regarding retaliation for nuclear strikes against US allies. We develop a theoretical typology of nuclear crises and investigate this phenomenon with a novel survey experiment (n = 6,623). Americans, Japanese, and South Koreans viewed realistic emergency alert messages about a most-likely case for nuclear retaliation: a North Korean missile attack on a US ally protected by the nuclear umbrella. Support for nuclear retaliation is low in all three countries, with important cross-national differences. Favorability increases with North Korean nuclear first-use, but it remains limited nonetheless. Surprisingly, US “tripwire” troop casualties do not increase Americans’ demands for nuclear retaliation. These findings have important implications for the study of nuclear crises and practice of extended deterrence.

On 9 March, India accidentally fired a BrahMos supersonic cruise missile into Pakistan. On 11 March, an official Indian statement on the incident acknowledged that “in the course of a routine maintenance, a technical malfunction led to the accidental firing of a missile.” Pakistan, in a press conference on 10 March, had already declared that a “high-speed flying object” from India had entered Pakistani territory. General commentary has criticized India’s sluggish communications in the immediate aftermath of the accident. This article puts Indian messaging around the misfiring to three tests of communication: language, timeliness, and narrative control.

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.