I wrote a number of posts on Forbes about Russia at the back end of 2014. At the time, there was a lot going on with the currency, the central bank and the banks. So for ease of reference, I've collected them here, in chronological order.
Why the Russian Central Bank can't defend the ruble
Has the Russian Central Bank thrown in the towel?
The Russian Central Bank is regaining control, but for how long?
Oil, sanctions and Russian politics
How to destroy a currency, Russian style
Russia and the banks
How OPEC destroyed the Russian ruble
Russian ruble: Let it fall, let it fall, let it fall
The Great Russian Bank Bailout
Why does Venezuela think Russia is its friend?
No doubt there will be more in due course. Russia and its problems are not going away any time soon.