https://www.eda.admin.ch/dam/dea/fr/documents/folien/Folien-Abkommen_fr.pdf
https://elpais.com/internacional/2023-12-27/niall-ferguson-rusia-puede-ganar-la-guerra-la-politica-exterior-de-biden-ha-sido-un-fracaso.html
https://www.belfercenter.org/sites/default/files/GreatMilitaryRivalry_ChinavsUS_211215.pdf