This is more a political move to protect the Russian ruble
.... Originally, the ruble was the currency of the Russian Empire and the Soviet Union before its dissolution.
The Russian ruble is also the world's first decimal currency, being decimalised in 1704 when the ruble became legally equal to 100 kopeks.
In November 2004, the authorities of Dimitrovgrad (Ulyanovsk Oblast) erected a five-meter monument to the ruble.
Example of previous political protection of the status of their currency :
http://www.huffingtonpost.com/2014/07/09/russian-banknote-apollo-gay_n_5570695.htmlSo it has a huge history and political background, and any other competing currency are being perceived as a threat or defined as "money substitutes"
They will cling to it, until it pulls them down into the murky
debts