
https://www.gov.uk/government/news/david-davis-concludes-visit-to-estonia

https://ec.europa.eu/commission/commissioners/2014-2019/andriukaitis/blog/likening-eu-ussr-not-unreasonable_en

http://www.bakermckenzie.com/-/media/files/insight/publications/brexit_tradeflows.pdf?la=en