EU enlargement: prospects and challenges

http://www.oecd-ilibrary.org/docserver/download/5jlv2jhfnt48-en.pdf?expires=1494939516&id=id&accname=guest&checksum=08592067325A17BFB82AC6F6E15110B2

Tilis May 16, 2017

https://blogs.lse.ac.uk/europpblog/2025/12/03/the-eus-geopolitical-dream-is-dying-in-its-own-neighbourhood/

Tilis March 3, 2026

https://socialeurope.eu/who-guards-the-guardians-in-europe

Tilis September 9, 2022