Central and Eastern Europe Soviet Union; the independent states in former Yugoslavia (which were not considered part of the Eastern bloc); and the three Baltic states – Estonia, Latvia, Lithuania (which chose not to join the CIS with the other 12 former republics of the USSR). The CEE countries are further subdivided by their accession status to the European Union (EU): the eight first-wave accession countries that joined the EU on 1 May 2004 (Estonia, Latvia, Lithuania, Czech Republic, Slovakia, Poland, Hungary, and Slovenia), the two second-wave accession countries that joined on 1 January 2007 (Romania and Bulgaria) and the third-wave accession country that
European integration on 1 January 2001. Slovenia joined on 1 January 2007, Cyprus and Malta were admitted on 1 January 2008, Slovakia joined on 1 January 2009, Estonia on 1 January 2011, Latvia on 1 January 2014 and Lithuania on 1 January 2015. Outside the EU, agreements have been concluded with Andorra, Monaco, San Marino, and Vatican City for formal adoption, including the right to issue their own coins. Montenegro and Kosovo unilaterally adopted the euro when it launched. There has long been speculation about the possibility of the European Union eventually becoming a fiscal union. In the wake of the European