https://novayagazeta.ru/articles/2021/09/08/mne-by-slavian
http://region.expert/hasavurt25/
https://www.dsnews.ua/world/pochemu-ukraine-stoit-podderzhat-severnyy-potok-2-06082021-433263
https://jamestown.org/program/biden-putin-summit-failed-to-reverse-downturn-in-bilateral-relations/