Replication Data for: \"Incentives and Constraints: A Configurational Account of European Involvement in the Anti-Daesh Coalition\", European Political Science Review, 2022

In 2014, the USA initiated the formation of a multilateral military operation against Daesh in Syria and Iraq. Eventually, more than 70 states joined the anti-Daesh coalition. However, contributions to the military effort have been characterized by great variance, especially among EU member states. While some states took leading roles in the airstrikes, others provided training for Iraqi and Kurdish forces, and still others did not get involved beyond voicing their support for the policy. Against this backdrop, this article makes a two-fold contribution to the literature on military coalitions and security policy. Empirically, the article provides a mapping of the then 28 EU member states’ military engagement in the fight against Daesh in Syria and Iraq. Analytically, fuzzy-set Qualitative Comparative Analysis (fsQCA) is applied to account for the observed pattern of military involvement, using an integrative framework that combines international and domestic factors. The results demonstrate that multiple paths led towards EU military involvement in the anti-Daesh coalition. At the same time, international-level incentives, such as external threat and/or alliance value feature prominently in all three identified paths. The analysis further underscores the value of a configurational perspective, because neither an external threat nor alliance value are sufficient on their own to bring about the outcome. Across the set-theoretic configurations, these conditions either combine with other ‘push’ factors or with the absence of constraints against military involvement. In line with the latter, the article highlights the policy relevance of institutional constraints, especially legislative veto rights, since most of those countries that were involved in the airstrikes of the anti-Daesh coalition did not have formal parliamentary involvement on matters of military deployment policy.2014年，美国牵头组建了针对叙利亚与伊拉克境内达伊沙（Daesh）的多边军事行动，最终共有70余个国家加入这一反达伊沙联盟。然而各国在军事行动中的贡献度存在显著差异，欧盟（EU）成员国尤甚：部分国家主导了空袭行动，部分为伊拉克与库尔德武装提供训练支持，还有部分仅表态支持相关政策，未直接参与军事行动。 在此背景下，本文针对军事联盟与安全政策相关研究做出了两方面贡献。在实证层面，本文梳理了彼时28个欧盟成员国参与叙利亚、伊拉克境内反达伊沙作战的军事参与情况；在分析层面，本文采用结合国际与国内因素的整合性分析框架，运用模糊集定性比较分析（fuzzy-set Qualitative Comparative Analysis, fsQCA）解析各国军事参与的模式。 研究结果表明，欧盟成员国参与反达伊沙联盟存在多条实现路径。与此同时，在已识别的三条路径中，国际层面的激励因素（如外部威胁与/或联盟价值）均占据显著地位。 本研究进一步凸显了组态视角的研究价值：单一的外部威胁或联盟价值均不足以促成军事参与这一结果。在集合论组态框架下，上述条件要么与其他“推动型”因素相结合，要么与军事参与限制因素的缺失相搭配。 针对后者，本文着重指出制度约束的政策相关性，尤其是立法否决权：参与反达伊沙联盟空袭行动的国家中，绝大多数在军事部署政策相关议题上并未受到议会的正式审批约束。