As the EU prepares to mark the fifth anniversary of the biggest enlargement in its history on 1 May, conservative Western politicians are insisting in their EU election campaigns that the time has come "to close the doors" to further expansion, MEPs have warned.

German Green MEPs Gisela Kallenbach, her party's rapporteur for a recent enlargement report, and Angelika Beer, her party's spokesperson for foreign and security policy, warned yesterday (27 April) that the EU election campaign must not threaten the Western Balkans' EU accession prospects.

In light of a vote last Friday in the European Parliament on Swedish member Anna Ibrisagic's (EPP-ED) report on "consolidating stability and prosperity in the Western Balkans," Kallenbach and Beer raised concerns over what they consider a "dangerous form of campaigning".