http://www.cer.eu/sites/default/files/bulletin_118_js-sl_article2.pdf
https://ec.europa.eu/commission/sites/beta-political/files/aviation.pdf
http://www.standard.co.uk/news/politics/george-osborne-quits-as-mp-saying-he-is-leaving-westminster-for-now-a3518001.html
https://rusi.org/sites/default/files/briefingpaper-france-uk-2017.pdf