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
Member state of the European Union countries of Austria, Finland and Sweden acceded to the new European Union, though Switzerland, which applied in 1992, froze its application due to opposition from voters while Norway, which had applied once more, had its voters reject membership again. Meanwhile, the members of the former Eastern Bloc and Yugoslavia were all starting to move towards EU membership. Eight of these, plus Cyprus and Malta, joined in a major enlargement on 1 May 2004 symbolising the unification of East and Western Europe in the EU. They were followed by Bulgaria and Romania in 2007, then Croatia in 2013. The EU has