NICOSIA, Dec 16 (Reuters) - 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 hopefulafter meeting with ​Greek Cypriot leader Nikos Christodoulides and Turkish Cypriot leader Tufan........

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