UN Secretary General Ban Ki-Moon arrived in Cyprus on Sunday to invigorate long-running talks between Mehmet Ali Talat, the Turkish Cypriot leader, and Demetris Christofias, the Greek Cypriot leader. Both are in favor of reunifying the island, but have made little headway since negotiations started in 2008. The clock is ticking, and ticking loudly– if hardliner Dervis Eroglu wins presidential elections in Northern Cyprus in April as expected ,it could mean an end to talks. (Eroglu supports a two-state deal, which is anathema to most Greek Cypriots.) The Turkish government has backed Mr. Talat in his efforts since a peaceful resolution to the Cyprus dispute would remove one of the biggest obstacles to Turkey’s bid for EU membership. Moreover, it would strengthen Turkey’s “zero problems with neighbors” foreign policy.