External drivers of EU differentiated cooperation: How change in the nuclear nonproliferation regime affects member states alignment

Michal Onderco; Clara Portela

doi:10.1080/13523260.2022.2146336

External drivers of EU differentiated cooperation: How change in the nuclear nonproliferation regime affects member states alignment

Michal Onderco^*, Clara Portela

^*Corresponding author for this work

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Abstract

Since its establishment, the Common Foreign and Security Policy (CFSP) has strived to increase convergence among EU member states. Yet, convergence remains elusive and scholars have started to explain the emergence of differentiated cooperation resulting from multiple internal EU crises. We posit that the convergence in the EU member states with respect to nuclear weapons has been fundamentally altered by the humanitarian turn to nuclear disarmament. This has led to a crystallization of differentiated subgroups among the member states, whose membership coincides with that of informal groupings active in the broader nuclear nonproliferation regime. Combining quantitative data on resolution sponsorship at the Non-Proliferation Treaty review process and voting at the UN General Assembly, we show that significant change in the international nuclear nonproliferation regime led to differentiated cooperation within the CFSP, resulting in two cohesive subgroups of member states.

Original language	English
Pages (from-to)	150-175
Number of pages	26
Journal	Contemporary Security Policy
Volume	44
Issue number	1
DOIs	https://doi.org/10.1080/13523260.2022.2146336
Publication status	Published - 2023

Bibliographical note

Funding Information:
This project was supported from Charles University Research Centre program under Grant UNCE/HUM/028 (Faculty of Social Sciences / Peace Research Center Prague). An earlier version of this paper was presented at the authors’ workshop at the EUI in Florence in October 2021. We thank the organizers of the workshop and the editors of this special issue, Maria Giulia Amadio Viceré and Monika Sus, as well as Benjamin Martill and Stephanie Hofmann, for helpful comments. We are also grateful to the CSP editors and two outstanding reviewers for their helpful suggestions which greatly benefited this article. We thank Marin Lucic and Femke Verburg for diligent research assistance.

Publisher Copyright:
© 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

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External drivers of EU differentiated cooperation How change in the nuclear nonproliferation regime affects member states alignmentFinal published version, 2.75 MBLicence: CC BY-NC-ND

Cite this

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abstract = "Since its establishment, the Common Foreign and Security Policy (CFSP) has strived to increase convergence among EU member states. Yet, convergence remains elusive and scholars have started to explain the emergence of differentiated cooperation resulting from multiple internal EU crises. We posit that the convergence in the EU member states with respect to nuclear weapons has been fundamentally altered by the humanitarian turn to nuclear disarmament. This has led to a crystallization of differentiated subgroups among the member states, whose membership coincides with that of informal groupings active in the broader nuclear nonproliferation regime. Combining quantitative data on resolution sponsorship at the Non-Proliferation Treaty review process and voting at the UN General Assembly, we show that significant change in the international nuclear nonproliferation regime led to differentiated cooperation within the CFSP, resulting in two cohesive subgroups of member states.",

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External drivers of EU differentiated cooperation: How change in the nuclear nonproliferation regime affects member states alignment

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