https://www.rosbalt.ru/world/2021/12/30/1937990.html
http://region.expert/defederalization/
https://ru.krymr.com/a/vitaliy-portnikov-krym-diktuyet-pravila/31630895.html
https://hvylya.net/analytics/244375-ultimatum-putina-i-rossiysko-ukrainskaya-voyna-2022
https://www.bbc.com/russian/features-59817247
https://www.bbc.com/russian/news-59815965
https://www.rbc.ru/newspaper/2021/12/29/619f93a29a79479fd98185b7