https://www.dw.com/ru/kommentarij-putin-torzhestvuet-zapad-laviruet/a-60361324
http://region.expert/defederalization/
https://hvylya.net/analytics/244375-ultimatum-putina-i-rossiysko-ukrainskaya-voyna-2022
https://www.rosbalt.ru/russia/2021/12/29/1937757.html