
http://www.lisbon-treaty.org/wcm/the-lisbon-treaty/treaty-on-european-union-and-comments/title-1-common-provisions/7-article-7.html

https://freedomhouse.org/report/freedom-world/2021/democracy-under-siege

https://www.opendemocracy.net/kamil-matuszczyk/migration-crisis-in-2017-challenges-for-eu-solidarity