
https://www.ips-journal.eu/topics/democracy-and-society/saving-the-eu-from-disintegration-6765/?utm_campaign=en_1106_20230609&utm_medium=email&utm_source=newsletter

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

http://www.diw.de/documents/publikationen/73/diw_01.c.562050.de/17-29.pdf