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https://jamestown.org/program/russias-military-boosts-electromagnetic-spectrum-capability/
https://novayagazeta.ru/articles/2021/09/18/pereproshitaia-rossiia
https://www.kommersant.ru/doc/4988008
https://www.rosbalt.ru/world/2021/09/15/1921413.html
https://novayagazeta.ru/articles/2021/09/09/po-doroge-v-shatdaun
http://www.kasparov.ru/material.php?id=613900530B375§ion_id=444F8A447242B