European leaders were preparing on Thursday for the possibility of Greece leaving the euro zone to preserve the 12-year-old single currency.

French President Nicolas Sarkozy and German Chancellor Angela Merkel told Prime Minister George Papandreou at a torrid meeting in Cannes that Athens would not receive a cent more in aid -- Greece was due an 8 billion euros aid payment this month -- until it votes to meet its commitments to the euro zone. The story on Reuters