UN-sponsored negotiations to develop institutional arrangements acceptable to both communities began in 1968; several sets of negotiations and other initiatives followed. Turkish Cypriots focused on bi-zonality, security guarantees, and political equality between the two communities. The Greek Cypriots however emphasized the rights of unrestricted population movement, recovery of property, resettlement, and the return of territory to their control. Turkish Cypriots favour a federation of two nearly autonomous societies living side by side with limited contact, and allowing Turkish migrants to stay, while Greek Cypriots envision a more integrated structure, and requiring the Turkish migrants to leave the island.