https://blogs.lse.ac.uk/brexit/2019/06/26/did-we-ever-really-understand-how-the-eu-works/
https://publications.parliament.uk/pa/cm200203/cmhansrd/vo021126/debtext/21126-17.htm
https://www.opendemocracy.net/uk/leanne-wood/fault-lines-of-welsh-politics-have-been-redrawn?utm_source=Daily+Newsletter&utm_campaign=970123e408-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-970123e408-407405485
http://blogs.lse.ac.uk/brexit/2017/12/05/a-high-risk-game-of-chicken-is-being-played-over-the-irish-border/