Original sentence: However, the TRNC has yet to be recognised by any country other than Turkey.The TRNC is separated from the south by the United Nations-controlled Green Line).The north of the  island has been under Turkish military occupation since 1974
Edited sentence: The northern part has been under Turkish military occupation since 1974 and the regime established there styles itself the Turkish Republic of Northern Cyprus (which is separated from the south by the United Nations-controlled Green Line); however, this entity has yet to be recognised by any country other than Turkey