This working paper discusses the institutional convergence of Commonwealth of Independent States (CIS) towards European Union (EU) benchmarks, highlighting the impact of EU cooperation agreements on institutional development. It analyzes external and internal drivers of institutional change and evaluates country-specific European Neighborhood Policy (ENP) outcomes, revealing that EU initiatives can act as catalysts but not primary drivers of institutional convergence. The study emphasizes the importance of good governance and suggests that while EU engagement can improve governance quality, the success of such processes relies heavily on tailored action plans for individual countries.