http://www.kasparov.ru/material.php?id=6134925BD6536
https://novayagazeta.ru/articles/2021/09/02/shchedrost-na-rasstrely
https://www.bbc.com/russian/news-58399319
https://www.svoboda.org/a/v-rossii-net-mesta-politike/31434790.html
https://www.nytimes.com/2021/08/30/world/europe/russian-opposition-leaders-exile.html