Because their tax revenue is closely tied to the price of oil, so when you budget the next 10 years on a forecasted price of $85/barrel and prices go down to 40

Because their tax revenue is closely tied to the price of oil, so when you budget the next 10 years on a forecasted price of $85/barrel and prices go down to 40-50 for a sustained period, you start getting a lot of starving pensioners freezing to death and/or freezing pensioners starving to death. Friends in provincial cities report it has been a really, really bad winter.