Nuclear Security Matters

Russia’s invasion of Ukraine is upending one long-standing geopolitical norm after the other, with nuclear arms control potentially one of the next to go. In 2021, the United States and Russia extended the 2010 New START pact—the only remaining major nuclear agreement between the two countries—through 2026. Russia is now threatening to halt U.S. military inspections required under the agreement, but there are challenges for the future of arms control that go beyond the fate of New START.

There are two possible pathways for arms control after Russia’s war in Ukraine. The first, less likely scenario is an arms control renaissance. The 1962 Cuban missile crisis, for example, was a wake-up call for the United States and Soviet Union to the dangers of nuclear escalation. The decade after the crisis saw a suite of arms control efforts, including the Limited Test Ban Treaty, the Nuclear Non-Proliferation Treaty (NPT), the Strategic Arms Limitation Talks, the Anti-Ballistic Missile Treaty, and a series of risk-reduction measures, such as the Incidents at Sea Agreement. The Ukraine crisis may prove another impetus for post-conflict cooperation, albeit a costly one.

Mariana Budjeryn, research associate at Managing the Atom, speaks about the legacy of the 1994 Budapest Memorandum and the remnants of Soviet nuclear weapons in Ukraine.

The regime built around the 1970 Treaty on the Non-Proliferation of Nuclear Weapons (NPT) has helped curtail the spread of nuclear arms for fifty years. In hindsight, it is remarkable only nine states possess the world’s most powerful weapon. The NPT achieved much success during Cold War bipolarity and U.S. unipolarity in its aftermath. But today, China’s rise and Russia’s resurgence have ushered in a new era of emerging multipolarity. Can the treaty withstand the potential challenges of this dynamic environment? There is a real risk that multipolarity may shake the scaffolding of the nonproliferation regime, presenting a significant test to the NPT’s durability. This article identifies four essential elements of the nonproliferation regime: widespread membership, adaptability, enforcement, and fairness. History suggests bipolarity and unipolarity in the international system largely sustained and promoted these NPT features. When international regimes lack such elements, it sharply curtails their long-term efficacy.

Wedge strategy theory explains how states use strategic arms control to divide adversaries by affecting their trust, threat perceptions, and beliefs about a commitment’s trade-offs. Examining three landmark arms control negotiations shows how the wedge motive was a key component to these negotiations.

Christopher Ford, John Harvey, Franklin Miller, Keith Payne, and Bradley Roberts respond to Scott Sagan and Allen Weiner’s spring 2021 article, “The Rule of Law and the Role of Strategy in U.S. Nuclear Doctrine.”

To date, the U.S. government has not declared that it no longer reserves a purported right to target civilians by way of reprisal, in response to an unlawful attack against U.S. or allied civilians. As we have argued elsewhere, and as Adil Haque recently called on the Biden administration to do, it is time for the United States to acknowledge that customary international law today prohibits targeting civilians in reprisal for an adversary’s violations of the law of war.

When properly applied, the key principles of the law of armed conflict have a profound impact on U.S. nuclear doctrine. Specifically, it would be unlawful for the United States to intentionally target civilians, even in reprisal for a strike against U.S. or allied civilians.

Today, the origins of the concept of RW have largely been forgotten.  Indeed, since 9/11, radiological weapons have been associated mainly with non-state actors, who may not have the means or motivations to acquire and use far more lethal nuclear explosives.  A fixation on the very real dangers posed by nuclear terrorism, however, should not obscure the risks that states also may again pursue radiological weapons.

President-elect Joe Biden’s decision to create a new cabinet-level position for climate-related issues — and to choose so prominent a figure as former Secretary of State John Kerry to fill it — demonstrates Biden’s sincerity over putting climate at the very center of U.S. foreign policy. It is easy to understate the importance of this appointment, given the flurry of czars created by most new administrations.

In this episode of International History Declassified, Kian and Pieter speak with Dr. Mariana Budjeryn of Harvard University's Belfer Center. Dr. Budjeryn explains the significance of the Budapest Memorandum, which was signed 25 years ago on the heels of the collapse of the Soviet Union, and which made Ukraine one of the few countries to give up its nuclear arsenal. Dr. Budjeryn also provides fascinating insight into her experiences researching in Ukrainian archives and interviewing Soviet generals.