Buying gas with roubles

[Riemann]

Prior thread on the exact topic, possibly was not found by OP because of the alternate spellings ruble/rouble.

Why did Putin demand that Russian gas be paid for in rubles?

The article below says that Poland refuses to pay for Russian gas using rubles. Poland notes the terms of the contract does not specify they pay in rubles. Ok, but, presumably, Poland is still paying Russia in some fashion. Whether it is the zloty or the euro Russia is getting currency. Indeed, foreign currency might be more useful to Russia right now since the collapse of the ruble in price. I assume Putin wants the money in rubles to prop-up the ruble in exchange markets. But, if Putin h…