https://www.gazeta.ru/business/2019/12/24/12881510.shtml
http://www.kasparov.ru/material.php?id=5E021FD1DF142
https://www.inopressa.ru/article/24Dec2019/nzz/bykov.html
While sanctions will depress Russia's economic performance, they are unlikely to go to an extreme that causes its economic collapse.
http://www.ng.ru/cis/2019-12-23/5_7759_ukraine.html
https://www.kommersant.ru/doc/4205887