Greek Prime Minister Alexi Tsipras held talks with the Greek orthodox patriarch as he embarked on his first official visit to Turkey set to be devoted to grappling with the huge flow of refugees entering his country from Turkish territory.
European Commission President Jean-Claude Juncker firmly defended Sunday the EU's hotly-contested plan to redistribute refugees across Europe despite calls by Poland to scrap the scheme after the deadly attacks in Paris.
Canada's new prime minister vowed to make good on campaign promises to resettle 25,000 Syrian refugees by the beginning of next year and bring home fighter jets battling the Islamic State group in Iraq and Syria.
Eurogroup chairman Jeroen Dijsselbloem said the fallout from the refugee crisis should be considered when assessing some members' budgets, adding it had already had a major impact on debt-ridden Greece.
European Union and Balkan leaders struggled Sunday to reduce tensions over how to tackle the migrant crisis as Slovenia warned the bloc will "start falling apart" if it fails to take concrete action within weeks.