https://www.ecfr.eu/page/-/popular_demand_for_strong_european_foreign_policy_what_people_want.pdf
https://www.ipinst.org/wp-content/uploads/2024/10/2024-Multilateralism-index.pdf
https://www.econstor.eu/bitstream/10419/266146/1/1820832732.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