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/news-59810520
https://www.bbc.com/russian/news-59769752
https://www.kommersant.ru/doc/5152106
https://www.rosbalt.ru/moscow/2021/12/24/1937067.html