Since 1974 the southern part of Cyprus has been under the control of the government of the Republic of Cyprus, while the northern part, administered by Turkish Cypriots, proclaimed itself the "Turkish Republic of Northern Cyprus" ("TRNC") in 1983. The United States does not recognize the "TRNC," nor does any country other than Turkey. A substantial number of Turkish troops remained on the island. A buffer zone, or "Green Line," patrolled by the UN Peacekeeping Force in Cyprus (UNFICYP), separates the two parts.