Putin has not yet shut off gas or oil to anyone even those sanctioning him but there might come a day and when the heat goes off in your house or gas to run a business then maybe Macron will find a way to pay in the Ruble. They have blocked Russia out of the SWIFT system so there is no way France or any other country can pay for the gas in Euros or dollars, so why should he not demand something that he can use as in the Ruble. Push Russia into a corner until you see a mushroom cloud out your front window in Europe or the United States and then thank your leaders for WWIII. the same as the US did to Japan with sanctions that forced Japan into WW2. yes history is history even if it does not fit your thoughts on how it happened