https://novayagazeta.ru/articles/2021/12/08/prinuzhdenie-k-peregovoram
https://www.ng.ru/education/2021-12-08/8_8321_children.html
https://carnegie.ru/commentary/85935
https://www.nytimes.com/2021/12/05/world/europe/putin-russia-ukraine-troops.html