In economic terms, the enlargement of the EU to include the Central and East ern European countries (CEECs) has been a success.

The Central and Eastern European Countries in the EU: Their development, the status quo and current issues
German Economic Institute (IW)
In economic terms, the enlargement of the EU to include the Central and East ern European countries (CEECs) has been a success.
The CEECs have all been effectively integrated into the common internal market and current economic developments point to ongoing convergence and increasing cohesion. Substantial financial resources from the EU budget have made a significant contribution to this process. In the political sphere, however, the balance is less positive. In some CEE countries, a tendency to revive nationalism can be observed and in recent years conflicts with the EU over the rule of law, democracy, and the independence of the judiciary have intensified. Attempts by the European Commission and the European Parliament to counter this phenomenon with both existing instruments and new procedures have so far proved unsuccessful. Indeed, these unresolved frictions have recently hampered agreement on the 2021–2027 Multiannual Financial Framework. The lessons to be learned from these developments need to be applied when further enlargements are considered.

The Central and Eastern European Countries in the EU: Their development, the status quo and current issues
German Economic Institute (IW)
More on the topic
The UN Sustainable Development Goals: Some Reflections from the Perspective of the European Economic and Social Committee
To some, it might seem odd that the Sustainable Development Goals (SDGs) would be of relevance to the highly developed industrial nations that form the EU.
IW
Europe’s Digital Decade: how to reach a skilled workforce in 2030 to succeed in the digital transformation?
At the beginning of this year, the European Commission launched the first cycle of the Digital Decade policy program.
IW