EN
Main aim of this article is an analysis of discursive legitimising practices of selected EU policies. The study focuses on the Sejm’s debates in which the issue of EU Enlargement and European Neighbourhood Policy with special focus on Eastern Partnership (since 2008) were discussed between 2004 and 2014. The analysis answers the question which aspects of these policies are the most controversial today and why. How political actors perceive the future of the policies? Typical arguments used in debates concentrate on security, economic costs and benefits and the impact on the European integration. However in presented study special attention is paid to cultural, religious and identitarian arguments used by political actors.