https://www.kommersant.ru/doc/5228583
https://newtimes.ru/articles/detail/209032
http://region.expert/inversion/
https://www.bbc.com/russian/features-60419032
https://foreignpolicy.com/2022/02/18/russia-ukraine-arrest-assassination-invasion/
https://novayagazeta.ru/articles/2022/02/18/neodnoznachnye-tsifry