https://jaarverslag.raadvanstate.nl/in-de-staat/onverwachte-wendingen/
http://blogs.lse.ac.uk/brexit/2018/11/23/hubert-butler-essay-prize-what-happened-to-europe-without-frontiers/
https://www.brookings.edu/blog/order-from-chaos/2022/12/06/ukraine-is-the-victim-negotiations-should-be-kyivs-decision/?utm_campaign=Brookings%20Brief&utm_medium=email&utm_content=236923401&utm_source=hs_email
https://d2071andvip0wj.cloudfront.net/unga-28ii22.pdf