Cyprus problem in the context of "Nicosia"

Northern Cyprus, officially the Turkish Republic of Northern Cyprus (TRNC), is a de facto state comprising the northern third of the island of Cyprus. It is recognised only by Turkey, with the international community considering it territory of the Republic of Cyprus under Turkish military occupation. It extends from Cape Apostolos Andreas (the tip of the Karpass Peninsula) in the northeast to Morphou Bay in the northwest, with Cape Kormakitis at its westernmost point and the Kokkina exclave west of the mainland. A buffer zone controlled by the UN forms a barrier between both sides of the island and runs through Nicosia, the island's largest city and the capital of both sides.

After gaining independence from the United Kingdom in 1960, Cyprus was dominated by intercommunal violence between the island's Greek and Turkish populations. Greek Cypriots favoured enosis (union with Greece), while Turkish Cypriots favoured taksim (partition of the island). A coup d'état in 1974, performed as part of the Greek military junta's attempt to annex the island, prompted Turkey to invade Cyprus and capture the northern third of the island. This resulted in the eviction of much of the north's Greek Cypriot population and the flight of Turkish Cypriots from the south; the Turkish-occupied north unilaterally declared independence in 1983. UN Security Council Resolution 541 rejected the declaration as illegal and urged UN members not to recognise it. Attempts to resolve the Cyprus problem have been unsuccessful; Northern Cyprus and Turkey favour a two-state solution, while the Republic of Cyprus, the EU, and the UN favour a federalised Cyprus.

Greece and Turkey established diplomatic relations in the 1830s following Greece's formation after its declaration of independence from the Ottoman Empire. Modern relations began when Turkey was proclaimed a republic in 1923 following the defeat of the Ottoman Empire in World War I. Rivalry has characterised their relations for most of their history with periods of positive relations but no underlying resolution of the main issues.

Control of the eastern Mediterranean and Aegean seas remains as the main issue. Following the aftermath of World War II, the UNCLOS treaty, the decolonisation of Cyprus, and the addition of Dodecanese to Greece's territory have strained the relationship. Several issues frequently affect their current relations, including territorial disputes over the sea and air, minority rights, and Turkey's relationship with the European Union (EU) and its member states—especially Cyprus. Control of energy pipelines is also an increasing focus in their relations.

Javier Felipe Ricardo Pérez de Cuéllar Guerra (/ˈpɛrɛs də ˈkweɪjɑːr/ PERR-ess də KWAY-yar, Spanish: [xaˈβjeɾ ˈpeɾes ðe ˈkweʝaɾ]; 19 January 1920 – 4 March 2020) was a Peruvian diplomat and politician who served as the fifth secretary-general of the United Nations from 1982 to 1991. He later served as prime minister of Peru from 2000 to 2001.

His two terms as secretary-general coincided with the final decade of the Cold War, and he engaged in efforts to address the Iran–Iraq War, the Western Sahara conflict, the Cyprus problem, Namibian independence under the Tripartite Accord, the Soviet withdrawal from Afghanistan, the Gulf War, and the opening of the Croatian War of Independence.

In order to find a solution to the Cyprus dispute, which started in 1963, numerous plans and meetings in international arena were organized and eventually United Nations determined the solution to be "bi-zonal and bi-communal federation" based on the political equality of Greek Cypriot and Turkish Cypriot people. According to United Nations' 2004 Annan Plan for the reunification of Cyprus, the proposed United Republic of Cyprus would consist of two constituent states, the Greek Cypriot State and Turkish Cypriot State (Turkish: Kıbrıs Türk Devleti), which would be governed by Greek Cypriots and Turkish Cypriots respectively.