Abstract This article uses the case of Denmark to critically discuss key assumptions in the theoretical literature on dual citizenship. When Denmark surprisingly accepted dual citizenship in 2015, the decision reflected two distinct lines of argument: first, accepting dual citizenship would allow Danes living abroad to keep their Danish citizenship; second, because it is considered illegitimate to make people stateless, allowing dual citizenship would simultaneously allow for citizenship revocation of dual citizens who engage in or support acts of terror. This rationale stands in striking contrast to how dual citizenship has been previously theorised. The gradual acceptance of dual citizenship in Western countries since the early 1990s has been seen either as a symptom of a post-national era or as a pragmatic adjustment to the transnational realities of international migration. By contrast, the case of Denmark shows that dual citizenship may serve as a lever to protect the political community of the nation-state from terrorism and, as such, function as a tool of securitisation.

中文翻译：

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证券化时代的双重国籍：

摘要本文以丹麦为例，对双重国籍理论文献中的关键假设进行了批判性地讨论。当丹麦在2015年出人意料地接受双重国籍时，这一决定反映了两个截然不同的论点：首先，接受双重国籍将使居住在国外的丹麦人保持其丹麦国籍；第二，因为使人民无国籍被认为是非法的，允许双重国籍将同时允许撤销参与或支持恐怖行为的双重公民的国籍。这一理论与先前对双重国籍的理论形成鲜明对比。自1990年代初以来，西方国家逐渐接受双重国籍，这既被视为后国家时代的症状，也被视为对国际移徙的跨国现实的务实调整。相比之下，丹麦的案例表明，双重国籍可能成为保护民族国家政治社会免受恐怖主义袭击的杠杆，并因此成为证券化的工具。