The Cyprus Emergency (Απελευθερωτικός Αγώνας της Κύπρου 1955–59), also known as the Greek Cypriot War of Independence or the Cypriot War of Independence, was a conflict fought in British Cyprus between November 1955 and March 1959. The National Organisation of Cypriot Fighters (EOKA), a Greek Cypriot right-wing nationalist guerrilla organisation, began an armed campaign in support of the end of British colonial rule and the unification of Cyprus and Greece (Enosis) in 1955. Opposition to Enosis from Turkish Cypriots led to the formation of the Turkish Resistance Organisation (TMT) in support of the partition of Cyprus. The Cyprus Emergency ended in 1959 with the signature of the London-Zürich Agreements, establishing the Republic of Cyprus as a non-partitioned independent state separate from Greece. Cyprus was a territory of the Ottoman Empire from the late 16th century until it became a protectorate of the United Kingdom under nominal Ottoman suzerainty at the Cyprus Convention of 4 June 1878 after the Russo-Turkish War. In 1915, Cyprus was formally annexed into the British Empire after the Ottomans had entered World War I on the side of the Central Powers against the British, and it was initially governed by a military administration until 1925, when it was proclaimed the Crown Colony of Cyprus. From the 1910s to the 1950s, Greek Cypriots became increasingly dissatisfied with British rule and supportive of Enosis, the concept of political unification between Cyprus and Greece. Several unsuccessful offers made to Greece by the British to cede Cyprus in exchange for military concessions, as well as the noticeable lack of British investment on the island, caused a growing Cypriot nationalist movement. In 1954, Britain announced its intention to transfer its Suez military headquarters (the office of the Commander-in-Chief, Middle East) to Cyprus. On 1 April 1955, the EOKA started its insurgency with the 1 April Attacks. After a series of other incidents, the Governor General Sir John Harding declared a state of emergency on 26 November 1955.