"I am now in the process of consulting all the leaders of the EU member states. I share with them my strong belief that the key issue is still irregular migration… Obviously, we still have much work to do. But our aim must be clear: Never again should we allow the chaos of 2015 to repeat in Europe," Tusk was quoted in a press statement as saying.
He praised the progress in curbing illegal immigration to Europe that was achieved through a readmission accord with Turkey in March 2016.
The European Council estimates that the total number of undocumented migrants arriving in Greece from Turkey in the past four months equals that of a single day in October 2015.
Tusk was speaking ahead of the first EU summit without the UK prime minister which is scheduled to take place on September 16 in Bratislava, Slovakia.
