https://www.gazeta.ru/business/2019/12/27/12887222.shtml
https://www.radiosvoboda.org/a/pivnichnyj-potik-2-ekspert/30347381.html
https://www.gazeta.ru/business/2019/12/27/12887522.shtml
http://www.kasparov.ru/material.php?id=5E064BCF51D3C
Potential tactics would target senior officials and oligarchs.
https://glavcom.ua/economics/finances/trivoga-u-peredchutti-gazovogo-miru-649370.html