Cyprus leaders are holding key peace talks in Geneva, with the UN and senior diplomats voicing optimism that a reunification deal is within reach.
The foreign ministers of Greece, Turkey and the UK are involved - the countries that act as Cyprus security guarantors.
Turkey's Prime Minister Binali Yildirim is not going to the talks, despite an earlier report that he would attend.
The Greek- and Turkish-Cypriot communities have been split since 1974. A UN buffer zone divides them.
In 1974 Turkish troops invaded, following a coup by Greek Cypriots backed by the generals ruling Greece at the time.
For a deal to take effect it would have to win the support of both Cypriot communities in separate referendums.
UK Foreign Secretary Boris Johnson said the talks "offer both sides a unique opportunity to find a solution".