https://institutdelors.eu/wp-content/uploads/2021/10/BP_211006_La-primaute-du-droit-de-lUnion-europeenne_Omnes.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://blogs.lse.ac.uk/europpblog/2022/04/26/how-a-lasting-settlement-to-the-russia-ukraine-war-can-be-achieved/