https://www.gov.uk/government/news/david-davis-speech-at-ubs
http://blogs.lse.ac.uk/brexit/2018/09/25/brexit-has-become-unnegotiable-theresa-may-has-a-constitutional-duty-to-admit-that-truth/
https://www.migrationpolicy.org/news/eu-pact-migration-asylum-bold-move-avoid-abyss