https://www.amnesty.org/en/latest/news/2020/09/eu-surveillance-sales-china-human-rights-abusers/
https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef18002en.pdf
https://www.ifw-kiel.de/fileadmin/Dateiverwaltung/IfW-Publications/-ifw/Kiel_Working_Paper/2022/KWP_2218_Which_countries_help_Ukraine_and_how_/KWP_2218_Trebesch_et_al_Ukraine_Support_Tracker.pdf
https://www.brookings.edu/wp-content/uploads/2017/09/4_alganetal.pdf