NICOSIA, Dec 16 - The key U.N. envoy seeking to break a deadlock in Cyprus's long-running division said she was cautiously optimistic about a breakthrough but that it ‍would ​be premature to convene a multi-nation summit on ‍the conflict.

In an interview with Cyprus's Phileleftheros daily, envoy Maria Angela Holguin said she was hopeful after ​meeting ​with Greek Cypriot leader Nikos Christodoulides and Turkish Cypriot leader Tufan Erhurman on December 11. She said their discussion, which agreed to focus also on ‍confidence-building, was "deep, sincere and very straightforward".