18 months after Putin invaded Ukraine, Russia's sanctioned oligarchs are still rich and even less likely to stand up to him

Russian oligarchs are still rich. The West hoped that slapping sanctions on Russia's billionaires could help trigger a Kremlin coup sooner or later, but that prospect seems unlikely.

https://www.businessinsider.com/russia-oligarchs-still-rich-loyal-putin-ukraine-invasion-sanctions-2023-9