https://www.brookings.edu/articles/europes-messy-russian-gas-divorce/
https://www.southcentre.int/wp-content/uploads/2022/09/SV240_220826.pdf
https://www.eda.admin.ch/dam/eda/en/documents/publications/EuropaeischeAngelegenheiten/Schweiz-und-EU_en.pdf
https://www.brookings.edu/blog/order-from-chaos/2022/12/06/ukraine-is-the-victim-negotiations-should-be-kyivs-decision/?utm_campaign=Brookings%20Brief&utm_medium=email&utm_content=236923401&utm_source=hs_email