https://theins.ru/opinions/bilunov/247113
https://foreignpolicy.com/2021/12/13/biden-putin-ukraine-deter-russia-or-accept-defeat/
http://www.kasparov.ru/material.php?id=61B7B397DFCB3§ion_id=444F8A447242B
http://region.expert/belovezh/
https://www.rosbalt.ru/russia/2021/12/10/1935140.html
https://novayagazeta.ru/articles/2021/12/10/operatsiia-w
https://www.levada.ru/2021/12/10/dekabr-1991-go-kak-soyuz-stal-rushimym/