https://www.robert-schuman.eu/en/doc/entretiens-d-europe/ee-100-en.pdf
https://www.nao.org.uk/wp-content/uploads/2018/01/Implementing-the-UKs-exit-from-the-European-Union-the-Deparment-for-International-Trade.pdf
https://www.theatlantic.com/international/archive/2020/06/america-image-power-trump/613228/