https://www.bbc.com/russian/news-58966676
https://www.rbc.ru/newspaper/2021/12/27/61c4464f9a79475cbe2bf791
https://carnegie.ru/commentary/86091
https://www.kommersant.ru/doc/5152106
https://www.rbc.ru/newspaper/2021/12/22/61c1a9509a79476aa5e6b2cf
https://edition.cnn.com/2021/12/19/politics/joe-biden-russia-ukraine-obama-2014/index.html
https://novayagazeta.ru/articles/2021/12/17/napadete-nakazhem
https://theins.ru/history/247176