https://www.brookings.edu/research/a-post-american-europe-and-the-future-of-u-s-strategy/
https://www.eca.europa.eu/Lists/ECADocuments/SR21_08/SR_Frontex_EN.pdf
https://visegradinsight.eu/distant-liaisons-france-central-europe/
https://ec.europa.eu/commission/presscorner/api/files/document/print/en/ip_22_1511/IP_22_1511_EN.pdf