strangely, prominent economists (Dmitry Nekrasov for example who is absolutely not a Putinist) argue that with this intensity of war Russia can last up to 40 years

Collapse: The imminent end of Putin's regime

The Russian economy is imploding, threatening Vladimir Putin's grip on power.
His Keynesian strategy to counter Western sanctions – based on subsidised spending and artificially low interest rates – has backfired catastrophically, plunging the country into a boom-and-bust cycle that is now entering its most devastating phase.

The housing market, supported by government-subsidized mortgages at rates as low as 7% (despite real inflation estimated at 27% by Dr. Steve Hanke), is collapsing.