https://ukandeu.ac.uk/reforming-investor-state-dispute-settlement-eu-initiatives-and-uk-ambivalence/
https://www.brookings.edu/wp-content/uploads/2023/09/6_Moll-et-al_unembargoed_updated.pdf
http://ec.europa.eu/transport/sites/transport/files/eu_air_carriers_by_country_holding_an_active_operating_licence.pdf