https://www.nytimes.com/2021/10/25/us/politics/russia-cybersurveillance-biden.html
http://www.kasparov.ru/material.php?id=61704E8460924§ion_id=444F8A447242B
https://www.levada.ru/2021/10/19/demokratiya-sotsializm-i-rynochnye-reformy/
https://lansinginstitute.org/2021/10/12/russian-intelligence-focus-in-bulgaria/
https://jamestown.org/program/the-realities-of-russian-military-shipbuilding-part-one/
https://www.rbc.ru/newspaper/2021/10/04/61571a279a79478e0bc0b011