https://www.gazeta.ru/business/2017/12/30/11583752.shtml
Download the Report
https://www.csis.org/analysis/russian-speaking-foreign-fighters-iraq-and-syria
https://www.radiosvoboda.org/a/28945900.html
https://www.inopressa.ru/article/29Dec2017/nytimes/putin_ter.html
http://www.rosbalt.ru/russia/2017/12/29/1672008.html
Vladimir V. Putin, who is running for a fourth term as Russia’s president, has burnished his reputation for being tough on extremists.
https://www.kommersant.ru/doc/3511804
https://www.gazeta.ru/comments/column/desnitsky/11508710.shtml
http://www.kasparov.ru/material.php?id=5A41EFE0C99FA