http://www.conservativehome.com/parliament/2016/04/theresa-mays-speech-on-brexit-full-text.html
https://www.bloomberg.com/news/articles/2017-08-25/brexit-bulletin-when-silence-isn-t-golden
https://www.gov.uk/government/news/david-davis-opening-remarks-at-the-start-of-the-fourth-round-of-eu-exit-negotiations