https://www.kommersant.ru/doc/4323732
The Kremlin may have succeeded in ending its oil war with Saudi Arabia, yet the pain of crude’s crash is only just starting to hit Russia’s budget.
https://www.crimea.kp.ru/daily/27118/4199529/
https://www.radiosvoboda.org/a/%D1%96skorochennya-vydobutku-nafty-putin/30559644.html
https://carnegie.ru/commentary/81562
https://carnegie.ru/commentary/81541
https://www.radiosvoboda.org/a/30555829.html
https://www.radiosvoboda.org/a/30554576.html
http://www.kasparov.ru/material.php?id=5E96FF2A2A548