http://www.ecfr.eu/article/commentary_the_brexit_threat_to_britains_defence_industry
https://www.gov.uk/government/news/david-davis-opening-remarks-at-the-start-of-the-fourth-round-of-eu-exit-negotiations
https://infacts.org/queen-flip-flops-limbering-another-big-one/
https://publications.parliament.uk/pa/cm201719/cmselect/cmexeu/1778/1778.pdf