https://www.brookings.edu/wp-content/uploads/2023/03/USMCA-Forward-2023.pdf
https://www.crisisgroup.org/europe-central-asia/eastern-europe/ukraine/responding-new-crisis-ukraines-borders
http://www.iemed.org/observatori/arees-danalisi/arxius-adjunts/anuari/med.2018/IEMed_Crisis_EU_project_Medyearbook2018_Marc_Pierini.pdf