Ten European Union member states are celebrating the 15th anniversary of their European Union membership in Warsaw on Wednesday.

The ceremony will also be attended by Croatian Prime Minister Andrej Plenkovic.

Apart from Plenkovic, the ceremony in Warsaw will be attended by the prime ministers of Bulgaria Bojko Borisov, the Czech Republic Andrei Babis, Estonia Juri Ratas, Hungary Viktor Orban, Lithuania Saulis Skvernelis, Malta Joseph Muscat. Slovenia will be represented by Foreign Minister Miro Cerar.

The event will be hosted by Polish Prime Minister Mateusz Morawiecki. The event will aslo be addressed his Romanian colleague Viorica Dancila whose country is currently presiding over the Euroean Union.

The ceremony in Warsaw marks the15th anniversary of the May 2004 first wave of EU enlargement in which eventually 11 Baltics, Central and South Eastern European countries joined the EU.

It will bring together prominent political figures, policy makers and experts from the EU Member States, International and European institutions, the private sector, etc to identify and reflect on the experiences and the impacts of this EU enlargement episode.

The event will focus on the identification and discussion of experiences from which wider lessons can be learnt, using concrete country cases. It will consider the channels through which EU membership has helped to speed up convergence, via analysis of the role e.g trade, investment, financial integration and institutional channels have played.