https://www.ifri.org/sites/default/files/atoms/files/d._puhl_vfa_33_deutschland_die_zeitenwende_und_die_zukunft_de.pdf
https://ecfr.eu/wp-content/uploads/2024/02/Wars-and-elections-How-European-leaders-can-maintain-public-support-for-Ukraine.pdf
http://www.reineu2016.eu/system/reineu2016/files/REinEU2016.pdf?1477674044