Behind the Continent's Migrant Crisis By Fabrizio Tassinari and Hans Lucht

The success of any plan will depend on European countries working together. For years, northern and southern Europe have been divided by the euro crisis, with the parsimonious Northerners blaming the profligate Southerners. Southern governments have pleaded the North for support, but northern countries have refused to take on liability for debts incurred by nations they do not trust. In the migrant crisis, however, the roles have reversed. It is southern Europe that has shown virtue and forbearance, and northern Europe is seen as having neglected to play its part, even though countries such as Germany and Sweden have the greatest number of asylum applications. Perhaps it is not too farfetched to suggest that the north-south divide on the question of receiving refugees could be overcome by turning the euro-crisis narrative on its head, for example by allowing southern European countries to offset the costs of migration management from their deficit-reduction targets.
https://www.foreignaffairs.com/articles/western-europe/2015-04-29/fortress-europe