Hungarian Prime Minister Viktor Orban has called on the European Union to give Syria's neighbours €3bn (£2.2bn; $3.4bn) in financial aid to help those displaced by the civil war.
Mr Orban said supporting Turkey, Lebanon and Jordan with such a package would end the mass migration to Europe.
Hungary has struggled to cope with some 150,000 migrants that have crossed its borders so far this year.
From next week, people who enter the country illegally will be arrested.