Treaty of Guarantee (1960) in the context of "Economic union"

Akrotiri and Dhekelia (/ˌækroʊˈtɪəri ənd diˈkeɪliə/), officially the Sovereign Base Areas of Akrotiri and Dhekelia (SBA), is a British Overseas Territory that consists of two separate areas on the island of Cyprus. The areas, which include British military bases and installations that were formerly part of the Crown colony of Cyprus, were retained by the British under the 1960 treaty of independence signed by the United Kingdom, Greece, Turkey, the President of Cyprus and the representative of the Turkish Cypriot community. The territory serves as a station for signals intelligence and is thereby part of the United Kingdom's surveillance-gathering work in the Mediterranean and the Middle East.

Despite being under British control, Akrotiri and Dhekelia are integrated with the surrounding Cypriot communities and economies. The areas are notable for their strategic geopolitical value and rich environmental features, including the Akrotiri Salt Lake, a protected wetland. Education, policing, and healthcare services are provided in coordination with the Republic of Cyprus. The SBAs also play a significant role in intelligence and communications operations across the Eastern Mediterranean. Although not part of the European Union post-Brexit, the areas continue to be governed by protocols that align with certain EU laws to avoid disrupting the daily lives of residents.

The London and Zürich Agreements (Greek: Συμφωνίες Ζυρίχης–Λονδίνου; Turkish: Zürih ve Londra Antlaşmaları) for the constitution of Cyprus started with an agreement on 19 February 1959 in Lancaster House, London, between Turkey, Greece, the United Kingdom and Cypriot community leaders (Archbishop Makarios III for Greek Cypriots and Dr. Fazıl Küçük for Turkish Cypriots). On that basis, a constitution was drafted and agreed together with two prior Treaties of Alliance and Guarantee in Zürich on 11 February 1959.

Cyprus was accordingly proclaimed an independent state on 16 August 1960.