https://rusi.org/sites/default/files/newsbrief_37.3_elliott.pdf
https://labour.org.uk/wp-content/uploads/2022/12/Commission-on-the-UKs-Future.pdf
http://www.voxeurop.eu/en/2017/eu-uk-relations-5120821
http://openeurope.org.uk/today/blog/will-brexit-ground-flights-europe/