Nuclear Issues

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.

Mariana Budjeryn's Inheriting the Bomb tells the story of how Ukraine came into possession of the world's third-largest nuclear arsenal—larger than the combined stockpiles of China, France, and the United Kingdom at the time—and decided to disarm peacefully a few years later. Ukraine's denuclearization was far from a straightforward process. After initially renouncing nuclear weapons, Ukrainian officials sought recognition that their newly independent country was a rightful heir to part of the Soviet cache, deserving of equal treatment, financial compensation, and pledges that disarmament would not endanger Ukraine's security. 

Steven E. Miller provides an analysis of what the Russian invasion of Ukraine means for the security dynamics of the Arctic and Northern Europe.

David M. Allison argues that in ascending order of predictive power, warnings of an imminent nuclear strike would come from Russian whistleblowers, the U.S. intelligence community, and Putin himself.

From June 21-23, dozens of countries gathered in Vienna to discuss how to implement the new UN Treaty on the Prohibition of Nuclear Weapons (TPNW)External link. They were joined by nuclear disarmament activists from around the world, including hibakusha – atomic bombing survivors from Hiroshima and Nagasaki. Swiss diplomats were also present, but only to observe rather than directly participate. This may seem surprising, but it’s consistent with Switzerland’s pragmatism on questions of nuclear abolition.

Switzerland’s decision was based on careful study. Following a report by an interdepartmental working groupExternal link, the government opted not to become a TPNW member in 2018 and 2019. Instead, the country wants to work on nuclear disarmament with states inside and outside the treaty. Practically speaking, this means sending Swiss experts to observe TPNW proceedings. And that engagement is a good thing because the nuclear ban treaty is here to stay and cannot be ignored.

Existing risk reduction tools are designed to prevent risks associated with misperception or inadvertent escalation. They are not tailored to the type of intentional escalation and risk-taking that Russian President Vladimir Putin has demonstrated with regards to Ukraine. Preventing further escalation and nuclear use will require strengthening deterrence and developing new risk reduction tools.

La mia valutazione dei possibili rischi di uso di armi non convenzionali (anche tattiche nucleari) nel conflitto in Ucraina deriva in parte da precedenti storici importanti e in parte dalla mia esperienza diplomatica. Mi spiego meglio. Se guardiamo alla storia dei rischi nucleari, vediamo che in altri conflitti, paesi con armi atomiche hanno minacciato il loro uso per portare a conclusione il conflitto a loro vantaggio. L’amministrazione Eisenhower per esempio contemplò l’utilizzo di armi atomiche nel conflitto coreano per scoraggiare l’intervento della Cina. Israele nella famosa guerra dello Yom Kippur nel 1973 minacciò esplicitamente l’uso di armi nucleari per deterrenza nei confronti dell’invasione delle truppe arabe. In questi conflitti, tuttavia, i paesi con armi atomiche sono riusciti poi a prevalere con armi convenzionali e senza il ricorso alle armi nucleari. Abbiamo avuto altri conflitti che hanno coinvolto paesi con armi atomiche – l’Unione Sovietica in Afghanistan e l’America in Iraq – dove i paesi con arsenali atomici alla fine sono stati sconfitti ma non hanno fatto ricorso alle armi atomiche.

Although Russia has relied exclusively on conventional weapons for its invasion of Ukraine, behind the scenes lurks Moscow’s massive nuclear arsenal. Hours before Russian forces crossed into Ukraine, Russian President Vladimir Putin reminded the world that his country was “one of the most powerful nuclear states” and that anyone who interfered with his war in Ukraine or threatened Russia directly would face “consequences that you have never faced in your history.” Three days later, as global outrage grew, Putin ordered Russia’s nuclear forces to a higher level of readiness. Even without these explicit threats, Russia’s nuclear deterrent would have prevented Western countries from intervening in Ukraine. Beyond supplying Kyiv with anti-armor and light air defense weapons, they will not come to Ukraine’s defense for fear of nuclear escalation, as U.S. President Joe Biden and other NATO leaders have made abundantly clear. Now that Putin’s attempts to seize Kyiv have been thwarted, there is a risk he will use tactical nuclear weapons to bring Ukraine to its knees. And while this scenario remains unlikely, neither Ukraine nor NATO can do anything to prevent it from happening.

This is a particularly bitter pill to swallow for Ukraine, since it was once home to the world’s third-largest cache of nuclear weapons. After the collapse of the Soviet Union, Ukraine inherited a significant slice of the Kremlin’s nuclear arsenal. But in 1994, the newly independent country decided to surrender that arsenal in exchange for assurances from Russia, the United Kingdom, and the United States that its sovereignty and territorial integrity would be respected. The agreement, known as the Budapest Memorandum, is one that many Ukrainians have come to regret—first in the wake of Russia’s 2014 annexation of Crimea and invasion of eastern Ukraine, and now even more so after its all-out assault on the country. If Ukraine had held on to its arsenal, many have argued, Putin would never have dared to invade the country.

Il rischio atomico resta alto. Ce lo conferma un'esperta del settore, la professoressa Francesca Giovannini, direttrice esecutiva del Project on Managing the Atom presso il Belfer Center della Harvard University e già collaboratrice della CTBTO, l'organo con sede a Vienna che vigila sulla messa al bando dei test atomici.

The Kremlin is claiming that Ukraine is developing nuclear weapons. Like most of Russia’s other pretexts for invading Ukraine, this is dangerous nonsense. In his February 21 war speech, Russian President Vladimir Putin stated that Ukraine possesses delivery systems and nuclear technologies inherited from the Soviet Union and that, with foreign support, “it is only a matter of time” before Ukraine creates nuclear weapons. Echoing this concern, Russian Foreign Minister Sergei Lavrov in his address to the Conference on Disarmament on March 1, alleged that Ukraine “started dangerous games related to plans to acquire their own nuclear weapons.”