https://www.japantimes.co.jp/opinion/2023/04/09/commentary/world-commentary/soviet-era-oppression/
https://koerber-stiftung.de/site/assets/files/36032/koerber-emerging-middle-powers_report-2024.pdf
https://www.bruegel.org/policy-brief/eu-can-manage-without-russian-liquified-natural-gas
http://dip21.bundestag.de/dip21/btd/19/007/1900700.pdf