The European Union's president is calling for a crackdown on migrants who don't qualify for asylum as people fleeing conflict and poverty arrive on Europe's shores in huge numbers.

EU President Donald Tusk said Thursday at a summit of the bloc's leaders that "we need to contain illegal migration and this should be our priority."

He says that "all those who are not legitimate asylum-seekers will have no guarantee that they will stay in Europe."

More than 100,000 migrants have arrived in Europe by crossing the Mediterranean so far this year. Almost 2,000 have died or are missing.

Even though many flee war zones and persecution, the flow of migrants also include many just looking for a better life and a job.