https://www.ng.ru/dipkurer/2021-12-12/9_8324_negotiation.html
https://www.bbc.com/russian/features-59552095
https://hvylya.net/analytics/243252-virtualnyy-sammit-putina-baydena-analiz-osnovnyh-itogov
https://www.rosbalt.ru/russia/2021/12/10/1935140.html