The world is entering an era of nuclear disorder. Therefore, this article aims to examine the European engagement with nuclear weapon questions at the beginning of this disorder. The research questions are: in what ways does Europe engage with nuclear issues? And how to make sense of the divergence and ambivalent stances among European states on nuclear weapons? The review identified engagement regarding non-proliferation and divergence on disarmament at the EU level, but mostly disengagement with nuclear deterrence questions outside of the North Atlantic Treaty Organization (NATO), apart from short-lived discussions on the so-called ‘Eurodeterrent’. Regarding the former observation, it becomes increasingly hard to forge common positions on nuclear non-proliferation and disarmament within an EU context. The latter observation is exemplified by recurring but ephemeral debates on a European nuclear deterrent. To understand the divergence and ambivalent stances, several factors are of importance, varying from the primacy of national interest to geography. Consequently, while the world is entering an era of nuclear disorder, Europeans should start a strategic dialogue on the necessity of nuclear weapons without undermining transatlantic relations.