Military history of the Republic of Turkey in foreign relations and join NATO on February 18, 1952. Following NATO membership, Turkey initiated a comprehensive modernization program for its Armed Forces. In July 1974, the Turkish Armed Forces intervened against a coup in Cyprus, organized by EOKA-B and led by Nikos Sampson who ousted the democratically elected Cypriot President Archbishop Makarios III in order to establish Enosis (Union) between Greece and Cyprus. The coup was backed by the Greek military junta in Athens. On 20 July 1974 the Turkish Army invaded the island from the north, landing in Pente Mili beach, near Keryneia. The operations (named Attila I
Foreign relations of Northern Cyprus stance, the TRNC refuses any official recognition of the government of the Republic of Cyprus, calling it the ""Greek Cypriot Administration of Southern Cyprus"", and referring to its President as the ""Greek Cypriot Leader"". Turkey backs this position. After the Republic of Cyprus became a member of the European Union, the southern part of the island became part of the Customs Union of EU. The Northern part of the island is excluded from the Customs Union. In spite of that, the Green Line regulations are intended to ease trade relations between North Cyprus and EU. Oil exploration in East Mediterranean