The implementation of the Association Agreement (AA), including the Deep and Comprehensive Free Trade Area (DCFTA), between the EU and Ukraine has brought about a qualitatively new situation in the development of border regions and regional societies on both sides of the Schengen border. This volume's comparative study of the impacts of the AA and the DCFTA on borderlands in Ukraine, Poland, Slovakia, Hungary and Romania will contribute to the identification of new opportunities for cross-border cooperation and policy considerations for its further development.