https://lansinginstitute.org/2022/01/13/damage-to-svalsat-cable-proves-russia-further-upping-stakes/
https://rg.ru/2022/01/05/pochemu-padaiut-samolety-v-rossii-glavnye-prichiny.html
https://carnegie.ru/commentary/85989
https://foreignpolicy.com/2021/12/13/biden-putin-ukraine-deter-russia-or-accept-defeat/