Re-Shaping Collective Security After Crises. EU CSDP and NATO in the Era of Brexit and Trump

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Abstract

Collective security is a public good. In an era of genuine multipolarity and great power competition, in which various orders compete for influence at different levels (normative, economic, military), collective security organizations can constitute ‘building blocks off orders’ (Mearsheimer 2019). Brexit and Trump have added many unknowns to regional and international orders. This Panel traces the processes of adaptation in NATO and EU CSDP by studying their institutional and strategic responses to new challenges and sources of uncertainty. For the UK, status insecurity post Brexit referendum led the government in London to hedge its engagement with European security. Second, the legal and normative implications of collective security through alliance security are examined, by investigating the European collective security components after Brexit. The Panel closes with a study of the strategic outlook on the development of EU-NATO cooperation and the credibility of PESCO, evaluated based on two conceptual attributes of military alliance: essential hallmarks of military alliances: 1) ability of its members to fight together, and 2) peacetime costs.

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