https://ukandeu.ac.uk/wp-content/uploads/2020/06/Mind-the-values-gap.pdf
https://ukandeu.ac.uk/the-german-or-french-way-international-interdependence-vs-european-sovereignty/?mc_cid=50b7d10115&mc_eid=815b1928ec
http://cer.eu/sites/default/files/report_relaunching_eu_nov17.pdf
https://www.ifs.org.uk/publications/10302