Greek–Turkish relations regime, there were periodic crises with Turkey, which suspected that the Greek regime was planning a pro-unification coup in Cyprus. A 1971 Turkish law nationalized religious high schools, and closed the Halki seminary on Istanbul's Heybeli Island which had trained Greek Orthodox clergy since 1844. On July 15, 1974, a band of Greek Cypriot nationalists formed EOKA B, advocating Enosis (Union) with Greece and, backed by the Greek military junta in Athens, staged a coup against the Cypriot President and Archbishop Makarios. An ex-EOKA man, Nikos Sampson was appointed President. On July 20, Turkey—using its guarantor status arising from the
History of the European Union (1993–2004) hoped that Cyprus would join as a unified island. However, northern Cyprus has remained outside the control of the internationally recognised government of the Republic of Cyprus since the Turkish invasion of 1974. The Annan Plan for the resolution of the Cyprus dispute was rejected by Greek Cypriots in a 2004 referendum. The accession treaties were signed on 16 April 2003 in Athens, admitting Malta, Cyprus, Slovenia, Estonia, Latvia, Lithuania, Poland, the Czech Republic, Slovakia, and Hungary. Romania and Bulgaria were not among the 10 chosen to accede in 2004. Finally, on 1 May 2004, the Union expanded from 15