Hungary accused Austria of confusing 'solidarity and stupidity' after Vienna said that nations which do not accept refugees under European Union quotas should face sanctions.
US President Barack Obama said the world must offer haven to refugees, as he visited a Malaysian centre for displaced children amid a bitter and racially tinged US debate over the Syria exodus.
Some of the suspects in the Paris attacks took advantage of Europe's migrant crisis to "slip in" unnoticed, warning the EU needed to "take responsibility" over border controls.
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.
Canadian Prime Minister Justin Trudeau faced increasing calls to delay bringing in 25,000 Syrian refugees by year's end due to security concerns, following attacks in Paris.
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.
Germany's interior minister called for family reunification rights of Syrian asylum seekers to be limited, saying the country cannot cope with a doubling of its already record refugee numbers.
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.
Germany plans to speed up repatriations of rejected asylum-seekers from new central hubs, Chancellor Angela Merkel and her coalition allies agreed, vowing to bring order to a record migrant influx.
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.
Fresh off his election as speaker of the House of Representatives, US Congressman Paul Ryan refused to cooperate with President Barack Obama on immigration, ruling out any reform before 2017.