It also required the other signatories to guarantee Cypriot independence and territorial integrity, and to this end allowed the guarantor powers to take unilateral action to uphold the status quo in Cyprus.

Greek-Cypriot President Makarios III proposed constitutional amendments to end the deadlock, which were strongly opposed by the Turkish-Cypriot leadership and the government of Turkey.

Turkey, claiming to be exercising its right to unilateral intervention under the Treaty of Guarantee, then invaded the island in two stages beginning on 20 July 1974.

The goal of a federated Turkish Cypriot state was abandoned after eight years of failed negotiations, resulting in the 1983 declaration of independence.

The United Nations Security Council issued two resolutions (541 and 550) proclaiming that the Turkish Cypriot UDI was legally invalid and requesting that no other sovereign state should recognise the declaration and asked for its withdrawal.

The parliament of the Nakhichevan Autonomous Republic, which is a self-governing exclave of Azerbaijan, has issued a resolution recognising the TRNC as a sovereign nation.