Amid the ongoing confrontation between Russia and the West, the processes of consolidation and divergence among political elites are crucial for understanding the mechanisms that form dividing lines. This is particularly important when examining the elites of the European Union in their opposition to Russia. This article aims to develop a framework for analysing the dividing lines among EU elites in the context of relations with Russia. The analysis employs a multi-tier model establishing a relationship between the ‘depth’of a dividing line and the degree of elite disunity. The model includes two levels of analysis of dividing lines within the EU: supranational and national. The research demonstrates that, depending on the degree of interest misalignment and the availability of communication channels, elite divergence can result in segmentation, fragmentation or polarisation. Each of the tiers of divergence increasingly reduces the likelihood of forming a common EU position on foreign policy issues. All three tendencies — segmentation, fragmentation and polarisation — are observed within the EU in relation to Russia at different levels of elite analysis. Crucial to the formation of a dividing line is the aspect of EU—Russia relations in question: the degree of distancing from the country or support for, and funding of, containment. Additional variables include factors such as the regional affiliation of the elite, their ideology and position within the power structure. Among all levels of analysis, polarisation is most evident in the efforts of supranational elites to promote ‘militant integration’, which conflicts with the interests of national elites and citizens of member states.