The prime ministers of Greece, Albania and Macedonia met informally on Friday in northwestern Greece for talks on environment.
Greek Prime Minister George Papandreou, Albanian Prime Minister Sali Berisha and their Macedonian counterpart Nikola Gruevski met on the Lake Prespes, which straddles the borders of the three countries.
They are to discuss the prospects of cooperation in the protection of the Prespes National Park region. The three countries sighed a joint communique about ten years ago declaring their commitment to cooperate for protection of the region.
Papandreou early this week extended his invitations to the two neighbors to the informal meeting, which comes just days ahead of a crucial UN international summit on climate change in Copenhagen.
Papandreou is expected to hold talks on the sidelines with Gruevski on a name dispute that has soured the two neighbors' relations for the past 18 years.
Greece says it will block Macedonia's EU accession unless the country changes its name, arguing its name of Macedonia implies a territorial claim on its own northern province of the same name.