Original sentence: Negotiations initially between Greece, UK and Turkey, and later including representatives of the Greek and Turkish-Cypriots, lead to the creation of an independent state in 1960, the Republic of Cyprus, the constitution of which  ruled out the possibility of enosis or partition
Edited sentence: Negotiations initially between Greece, U.and Turkey, and later including the UK and the Greek and Turkish-Cypriots, lead to the creation of an independent state in 1960, the Republic of Cyprus, the constitution of which was based on political equality between two communities, Greek and Turkish-Cypriot, and ruled out forever the possibility of enosis