https://www.rand.org/pubs/research_reports/RR2200.html
https://rusi.org/sites/default/files/briefingpaper-france-uk-2017.pdf
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/710147/DATA_-_FINAL.pdf
http://www.ips-journal.eu/regions/global/article/show/brexit-but-what-about-africa-2199/