In 1974, following a coup sponsored by the Greek military junta of 1967-1974 and executed by the Cypriot National Guard the invasion of troops from Turkey (citing its authority as one of the three guarantor powers established by the Constitution), the Turkish Cypriots formally set up their own institutions with a popularly elected president and a prime minister, responsible to the National Assembly, exercising joint executive powers. Cyprus has been divided, "de facto", into the Greek Cypriot controlled southern two-thirds of the island and the Turkish Republic of Northern Cyprus a third. The Republic of Cyprus is the internationally recognised government of the Republic of Cyprus, that controls the southern two-thirds of the island. Aside from Turkey, all foreign governments and the United Nations recognise the sovereignty of the Republic of Cyprus over the whole island of Cyprus.