https://carnegie.ru/commentary/85935
https://www.rosbalt.ru/blogs/2021/12/07/1934490.html
https://www.ng.ru/economics/2021-12-06/1_8319_export.html
https://www.bbc.com/russian/news-59551407
https://www.nytimes.com/2021/12/05/world/europe/putin-russia-ukraine-troops.html
https://www.bbc.com/russian/news-59527176