https://rusi.org/explore-our-research/publications/commentary/israel-and-iran-are-edging-closer-direct-confrontation
https://www.bruegel.org/sites/default/files/2022-10/PC%2018%202022_1.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