https://www.bbc.com/russian/news-59810520
https://nvo.ng.ru/nvo/2021-12-23/2_1171_nvoweek.html
https://ru.krymr.com/a/rossiya-zapad-nato-ukraina-naprayzhennost-vtorzheniye-ugroza/31614512.html
https://theins.ru/history/247176
https://www.ng.ru/editorial/2021-12-14/2_8326_editorial.html
https://www.bbc.com/russian/news-59607070
https://hvylya.net/analytics/243252-virtualnyy-sammit-putina-baydena-analiz-osnovnyh-itogov
https://www.rosbalt.ru/russia/2021/12/10/1935140.html