
https://dgap.org/system/files/article_pdfs/dgap-report-2023-01-EN-Rethinking%20EUs%20Eastern%20Enlargement_0.pdf

https://www.ost-ausschuss.de/sites/default/files/pm_pdf/2023%2012%2006%20_%20Position%20concerning%20blockade%20on%20EU-UA%20border_final.pdf

https://www.swissinfo.ch/resource/blob/48146296/9bba2d8921db5945f3d453a05bd3b2c5/neutralitaetsbericht-2022-data.pdf