https://zn.ua/ukr/international/jak-zberehti-ukrajinu-pid-chas-torhiv-putina-z-bajdenom.html
https://hvylya.net/analytics/244375-ultimatum-putina-i-rossiysko-ukrainskaya-voyna-2022
https://www.bbc.com/russian/news-59810520
https://www.rbc.ru/newspaper/2021/12/28/61c21e289a79479e8562641b
https://www.kommersant.ru/doc/5153396
https://www.rosbalt.ru/moscow/2021/12/24/1937067.html
https://www.rbc.ru/newspaper/2021/12/24/61c42af29a79474d8a0adb28