Actually, I welcome this development in Russia as it might be a great experiment for the world to see.  Russia is a place that is mighty close to a seriously authoritarian country, and it would be of great interest to see if the Oppression Apparatus of Russia can squash the individuals seeking the freedom to exchange currencies as they wish...

I would like to know WHAT Russia would be banning, and how they would go about it.

Same comments about China and Venezuela.  Interesting experiments worth keeping an eye on.