The Cyprus Emergency was a conflict fought in British Cyprus between 1955 and 1959. The National Organisation of Cypriot Fighters (EOKA), a Greek Cypriot right-wing nationalist guerrilla organisation, began an armed campaign in support of ending British colonial rule and enabling 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. In the mid-1960s relations worsened between Greek and Turkish communities on Cyprus. Britain wanted to hand the crisis and a peacekeeping role to either NATO or UN forces. US President Lyndon B. Johnson tried to prevent either a Greek or Turkish invasion of Cyprus and war between them. American diplomat George Ball found Archbishop Makarios, president of Cyprus, difficult to deal with, as he commonly rejected advice.