The U.S. needs a more ambitious long-term approach to Russia that focuses not only on specific officials and oligarchs but on Russian government revenues and the Russian economy as a whole.
https://www.inopressa.ru/article/03Jan2019/ft/busines.html
http://www.kasparov.ru/material.php?id=5C2DE662282A6
https://www.ft.com/content/27debf42-09e5-11e9-9fe8-acdb36967cfc
https://tyzhden.ua/Society/225005
https://echo.msk.ru/blog/openmedia/2344951-echo/