https://www.vedomosti.ru/politics/articles/2017/12/30/746984-verhovnii-sud-priznal-zakonnim
https://www.kommersant.ru/doc/3502556
Download the Report
https://www.csis.org/analysis/russian-speaking-foreign-fighters-iraq-and-syria
https://politeka.net/reading/561811-natsbezpeka-ukrayini-peremogi-porazki-ta-stsenariyi-na-2018-rik/
https://www.radiosvoboda.org/a/28945900.html
https://echo.msk.ru/programs/beseda/2119648-echo/
https://www.radiosvoboda.org/a/28945769.html
http://www.kasparov.ru/material.php?id=5A4239226148D