The invasion of Ukraine by Russian forces in February 2022 has entirely transformed the European security landscape, bringing war to the European Union’s doorstep. Importantly, the war features a nuclear dimension that manifests itself in consequential ways, including Moscow’s nuclear sabre-rattling and its denunciation of the last surviving nuclear arms control treaty. This unleashed intriguing reactions, like a surprisingly tough resort to sanctions by the EU, or the shrinking of neutrality on the continent. However, while support for nuclear deterrence has increased in some NATO countries, support for arms control remains strong too. Meanwhile, nuclear disarmament advocates have not shifted their stance as a result of the crisis.
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