The United Nations Peacekeeping Force in Cyprus (UNFICYP) was originally set up by the Security Council in 1964 to prevent further fighting between the Greek Cypriot and Turkish Cypriot communities. In the absence of a political settlement to the Cyprus problem, UNFICYP has remained on the island to supervise ceasefire lines, maintain a buffer zone, undertake humanitarian activities and support the good offices mission of the Secretary-General.
More information: https://peacekeeping.un.org/en/mission/unficyp