https://wiiw.ac.at/different-choices-divergent-paths-poland-and-ukraine-dlp-6419.pdf
https://www.politico.eu/article/jean-claude-juncker-ukraine-corruption-eu-accession/
https://theconversation.com/michel-barnier-nomme-premier-ministre-emmanuel-macron-a-donne-les-cles-du-camion-au-rn-238388