Russia is not running out of money. The ruble/dollar and oil export numbers don't lie. The US, on the other hand, ran out of money a long time ago, and has been living on credit cards and kiting . . . as we are going to eventually find out.
The only significant things I can imagine going significantly wrong for Russia is if (a) Putin dies suddenly (he is a brilliant strategist and has powerful vision, unlike the US/EU Effetes) or (b) the Russian people are actually massively deprived of absolutely consumer essentials (I can't understand that, given the relationship with China, but I mention it. I actually think the US is at vastly higher risk of that sort of catastrophe..as medical masks and baby formula, among thousands of other shortages, should have made plain by now).