NICOSIA (Reuters) - Peace talks between estranged Greek and Turkish Cypriots will resume on May 15, a United Nations envoy said on Monday. Espeth Barth Eide was speaking to media after a meeting between Greek Cypriot leader Nicos Anastasiades and Turkish Cypriot leader Mustafa Akinci. It was their first encounter since Akinci, a moderate leftist, swept to victory in a Turkish Cypriot leadership election on April 26. (Reporting By Michele Kambas; Editing by Kevin Liffey)