Nuclear Issues

Mohammad Tabaar analyzes Iran's strategy to weaken Israel and divide the Middle East.

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.

On March 31,  the Project on Europe and the Transatlantic Relationship and the Minda de Gunzburg Center for European Studies hosted a discussion with Wolfgang Ischinger, former Chairman of the Munich Security Conference, Joseph S. Nye Jr., Harvard University Distinguished Service Professor, and Daniela Schwarzer, Executive Director for Europe and Eurasia at the Open Society Foundations, on how Russia’s invasion of Ukraine as well as the brutality of its action has caused an unexpected reversal of Germany’s long time security policy and led to strong reactions in the rest of Europe, NATO, and the posture of the Biden administration. The seminar examined the dimensions and consequences of these developments for the future of the EU and the West. Karl Kaiser, Senior Fellow at the Project on Europe, moderated.

Stephen Walt offers a tentative and far-from-comprehensive survey of what scholars have to say about the war in Ukraine.

In light of Russia’s annexation of Crimea and its current threat to Ukrainian sovereignty, it’s fair to ask: What is the significance now of the Budapest Memorandum?

No great breakthroughs or dramatic developments were expected at the Biden-Putin summit, and none was achieved. But the message was clear: There is a new sheriff in town. Putin noticed, describing Biden as very different from Trump—experienced, balanced, and professional.

A comparative analysis of the United States’ and the Soviet Union’s previously underexplored radiological weapons programs identifies the drivers behind their rise and demise. The findings of this analysis illuminate the factors likely to affect the pursuit of radiological weapons by other states in the future.