sentences:  It was hoped that Cyprus's accession to the European Union would provide an impetus for reunification of the island and, in 2004, the UN-backed Annan plan was put to referendums on both sides of the island.The plan envisaged a bicommunal, bizonal, federal state, with territorial concessions by the Turkish Cypriot side but only a limited right of return for displaced Greek Cypriots.The plan was accepted by the Turkish Cypriots but rejected by Greek Cypriots.