http://www.euronews.com/2017/12/08/view-visegrad-nations-protect-the-eu-it-s-time-to-say-thanks-
https://www.bloomberg.com/politics/articles/2017-04-27/merkel-warns-against-u-k-illusions-in-hard-line-brexit-speech?utm_content=brexit&utm_campaign=socialflow-organic&utm_source=twitter&utm_medium=social&cmpid%3D=socialflow-facebook-brexit
https://www.strategie.gouv.fr/sites/strategie.gouv.fr/files/atoms/files/fs-2020-na91-niveau-territoire-juin.pdf
https://ukandeu.ac.uk/trade-migration-and-brexit/