In this 17 minute video, Jason Jay Smart analyzes the role of Russian mafia clan corruption in the conduct of the war, and the risk of civil war.
https://www.youtube.com/watch?v=7D4ECbBdJHE
Perhaps (my speculation) the objective of the attack on Russian oil revenues, is to destabilize the regime through the mechanism of unleashing mafia civil war - fighting over a shrinking pie. The Capo of one of the major clans, is the head of Rosneft.
Putin’s Russia is a mafia State.