https://lansinginstitute.org/2022/01/13/damage-to-svalsat-cable-proves-russia-further-upping-stakes/
https://ru.krymr.com/a/vitaliy-portnikov-krym-diktuyet-pravila/31630895.html
https://www.rbc.ru/newspaper/2021/12/24/61c34e3f9a79470ec7ba9221
https://foreignpolicy.com/2021/12/13/biden-putin-ukraine-deter-russia-or-accept-defeat/