https://www.gazeta.ru/politics/2017/12/21_a_11511086.shtml
http://day.kyiv.ua/ru/blog/politika/kto-i-skolko-poteryal-ot-sankciy
https://www.inopressa.ru/article/21Dec2017/nytimes/chechnya.html
http://www.ng.ru/editorial/2017-12-21/2_7141_red.html
Sanctions could be a sign the Trump administration is heightening pressure on some Russians despite a more accommodating tone with President Vladimir V. Putin.
https://www.nytimes.com/2017/12/20/us/politics/trump-sanctions-russia-chechnya.html?_r=1
http://nv.ua/opinion/aslund/chego-tak-bojatsja-v-kremle-2406278.html
http://www.kasparov.ru/material.php?id=5A3A3A082ABC8
https://www.gazeta.ru/politics/2017/12/20_a_11503754.shtml
http://www.rosbalt.ru/world/2017/12/20/1669837.html