
https://blogs.lse.ac.uk/europpblog/2021/08/25/what-the-conference-on-the-future-of-europe-can-learn-from-the-failure-of-the-eu-constitution/

https://d1e00ek4ebabms.cloudfront.net/production/uploaded-files/2021%2011%2009%20Adenauer%20Stiftung%20speech_ENG_v5-7d1840b1-7b61-463e-ae23-ca7cbf13624e.pdf

http://www.egmontinstitute.be/content/uploads/2019/03/SPB108.pdf?type=pdf