https://foreignpolicy.com/2022/02/18/russia-ukraine-arrest-assassination-invasion/
https://www.chathamhouse.org/2022/02/why-minsk-2-cannot-solve-ukraine-crisis
http://region.expert/leviathan/
https://hvylya.net/analytics/247231-normandskiy-shantazh-ukrainy
https://www.bbc.com/russian/news-60326474