https://www.politico.eu/article/russia-vladimir-putin-more-land-eu-enlargement-growth/
https://ep00.epimg.net/descargables/2018/05/24/bfe9a6898e6b41480fd9d57aff93bc10.pdf
https://www.opendemocracy.net/can-europe-make-it/patrice-de-beer/catalonia-now-what?utm_source=Daily+Newsletter&utm_campaign=0b1fe93b93-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-0b1fe93b93-407405485
https://policyexchange.org.uk/wp-content/uploads/2017/07/After-Brexit-will-Ireland-be-next-to-exit-1.pdf