https://www.elysee.fr/admin/upload/default/0001/03/0090173c1bc9aaa87f21995ae3b88a55f1fda3d0.pdf
http://blogs.lse.ac.uk/brexit/2017/08/11/book-review-shifting-baselines-of-europe/
https://ec.europa.eu/commission/presscorner/api/files/document/print/en/speech_21_4701/SPEECH_21_4701_EN.pdf