A planned meeting between rival Cypriot leaders scheduled for tomorrow has been called off as a war of words over a nationalist commemoration in Greek Cypriot schools threatens reunification talks. <br/><br/>There is no immediate statement from the United Nations, which has been hosting the talks, but the Cyprus Government said that Greek Cypriot leader Nicos Anastasiades had been informed today that the meeting would not go ahead.<br/><br/>The row threatens nearly two years of UN-backed negotiations on ending the island's decades-old division that many had seen as the best chance for a settlement since Greek Cypriots rejected a UN reunification plan in 2004.<br/><br/>A meeting last Thursday broke up in acrimony with Anastasiades and his Turkish Cypriot counterpart Mustafa Akinci accusing each other of walking out.<br/><br/>UN envoy Espen Barth Eide had voiced confidence that this week's meeting in Nicosia would go ahead regardless, but the climate of trust between the two leaders has deteriorated.<br/><br/>The head of the UN peacekeeping force on the island, Elizabeth Spehar, had shuttled between the two sides to try to broker a compromise, meeting Akinci yesterday and Anastasiades today but to no avail.<br/><br/>Tensions have soared over the February 10 approval by the Cyprus parliament for Greek Cypriot schools to commemorate a 1950 referendum on Enosis, or union with Greece.