https://www.socialeurope.eu/2017/05/smooth-brexit-interests-germany-much-uk/
https://www.migrationpolicy.org/news/eu-pact-migration-asylum-bold-move-avoid-abyss
https://www.eurofound.europa.eu/sites/default/files/wpef17037.pdf
http://uk.reuters.com/article/us-britain-eu-negotiations-idUKKBN17R1XJ