European Union Enlargement - Focus on Eastern Europe

Abstract

Background: European Union (EU) enlargement remains a contested and evolving policy domain, increasingly shaped by geopolitical imperatives, democratic governance challenges, and institutional constraints. The introduction of the revised enlargement methodology in 2020 and the geopolitical transformations following Russia's full-scale invasion of Ukraine in 2022 have significantly reshaped accession priorities and processes. This study examines contemporary EU enlargement practices and identifies the principal political, institutional, and geopolitical challenges affecting the accession process, with particular emphasis on the revised enlargement methodology and post-2022 developments. Methods: The study draws on an analysis of the relevant academic literature, EU policy frameworks, and institutional developments concerning enlargement conditionality, accession negotiations, democratic reforms, and the EU's institutional capacity. Particular attention is given to the Western Balkans and Georgia within the broader context of EU enlargement policy. Results: The analysis identifies the *fundamentals-first* principle and gradual integration mechanisms as central features of contemporary EU enlargement policy. These approaches emphasize the rule of law, anti-corruption measures, democratic governance, and measurable reform benchmarks. Nevertheless, democratic backsliding, state capture, and inconsistent reform implementation in candidate countries continue to undermine the credibility and effectiveness of EU conditionality. Bilateral disputes and the capacity of individual member states to obstruct accession negotiations further complicate the process. Russia's war against Ukraine has increased the geopolitical urgency of enlargement while exposing persistent limitations in the EU's institutional preparedness, decision-making mechanisms, and capacity to integrate new members. These developments reveal a fundamental tension between accelerating accession and ensuring substantive compliance with EU democratic and institutional standards. Conclusions: Effective and sustainable EU enlargement requires a balanced approach that combines credible accession incentives, consistent and merit-based conditionality, and institutional reforms within the European Union. Strengthening decision-making procedures, addressing budgetary constraints, and ensuring substantive democratic reforms in candidate countries are essential for maintaining the credibility and effectiveness of enlargement policy. Without parallel institutional adaptation and coherent political commitments, the EU risks undermining the legitimacy of the accession process, increasing uncertainty among candidate countries, and weakening its normative authority and geopolitical influence.