https://hvylya.net/analytics/243107-rozmova-putina-baydena-golovni-visnovki-dlya-ukrajini
https://carnegie.ru/commentary/85935
https://www.rbc.ru/newspaper/2021/12/06/61aa3c879a7947e608b37485
https://www.nytimes.com/2021/12/05/world/europe/putin-russia-ukraine-troops.html
https://www.dw.com/ru/rezhimy-putina-i-lukashenko-chto-obshhego-v-chem-razlichija/a-60011581