This is going to hit Putin and Russia's economy very hard.
Wall Street gurus see crude falling to $75 a barrel next year before returning to $80 in the medium-term. That’s going to be hard on producer countries who have gotten used to a price of $100 in recent years.
Lower oil prices are also having an impact on Russia, which isn’t an OPEC member but which is just as dependent on high oil prices to balance its budget. Finance Minister Anton Siluanov told parliament last week that budget assumptions for 2016 and 2017 would have to be thoroughly because the original draft had assumed average prices of $100/bbl- a “different economic reality.”
Siluanov has already said that many of the government’s planned increases in defense spending will have to be pushed back if the situation doesn't improve. Next year’s budget is only being spared because the government will draw down some $10 billion in reserves from its rainy-day fund.
http://fortune.com/2014/10/27/oil-prices-tumble-again-after-goldman-slashes-outlook/