https://www.mckinsey.com/mgi/our-research/the-complication-of-concentration-in-global-trade
https://unctad.org/news/post-brexit-uk-exports-could-fall-32-billion-due-non-tariff-measures-and-tariffs
https://www.ceps.eu/wp-content/uploads/2021/03/PI2021-05_The-power-surplus.pdf
https://www.timeshighereducation.com/fr/books/review-shadows-empire-anglosphere-british-politics-michael-kenny-and-nick-pearce-polity-press