Mastrandrea, R; Antuofermo, G; Ovadek, M; Yeung, TY-C; Dyevre, A; Caldarelli, G; (2024) Coalitions in international litigation: a network perspective. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences , 382 (2270) , Article 20230158. 10.1098/rsta.2023.0158.

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Abstract

We apply network science principles to analyse the coalitions formed by European Union nations and institutions during litigation proceedings at the European Court of Justice. By constructing Friends and Foes networks, we explore their characteristics and dynamics through the application of cluster detection, motif analysis and duplex analysis. Our findings demonstrate that the Friends and Foes networks exhibit disassortative behaviour, highlighting the inclination of nodes to connect with dissimilar nodes. Furthermore, there is a correlation among centrality measures, indicating that member states and institutions with a larger number of connections play a prominent role in bridging the network. An examination of the modularity of the networks reveals that coalitions tend to align along regional and institutional lines, rather than national government divisions. Additionally, an analysis of triadic binary motifs uncovers a greater level of reciprocity within the Foes network compared to the Friends network. This article is part of the theme issue ‘A complexity science approach to law and governance’.

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