900 million per day....Is 900 million cost per day for war in rubles or US dollars?
For comparison, the US Afghanistan War cost $300 million per day over 20 years max for an economy 14X larger than Russia. If Russia is spending 3X more per day for war, with 14X smaller economy, then the mathematically, holding all else equal, they can only hold out 0.5 year at best at this rate of spend, which highly likely means declaring victory after Donbass is conquered within the next few months. US$900 million a day for "a few years" is unsustainable for a country whose military defense budget is only $65B. Even in a single year, you are talking about $330B dollars for cost of war at $900 million per day, which for a $1.3 Trillion GDP, is a huge burden.