Russia's central bank governor tries to resign and Putin refuses.
Elvira Nabiullina apparently tried to step down, but it would be viewed as betrayal by Putin, who instead made her sign up for five more years last week.
"Why would she want to resign?"
Well for one, her boss is a murdering dictator invading a sovereign country.
Also, that invasion is likely making her job a walking nightmare. And that was before
Putin demands "hostile" countries buy oil in rubles not Euros or dollars, a move almost certainly done to get as much foreign currency into Russia to prop up its failing economy.
"Does that apply to previous contracts?"
I mean, it sounds like it would
break previous contracts to me.
"Does EUrope have a choice?"
Yes. Just don't do it. The vast majority of Russia's oil and gas sales are in Euros or dollars, like 95% plus. Swapping that out for rubles would help the exchange rate, but Russia would still get the Euros and dollars. Considering Russia has declared nearly everyone "hostile" he has two choices, (a) keep the existing contracts or (b) lose massive amounts of money. Yes, EUrope would hate losing 40% of its natural gas if they just stopped buying it entirely. But the effect on Putin's economy would be worse and everyone knows it. Germany and Italy are already publicly against the change and they're customers #1 and #2. Russia is in no condition to refuse purchases of their biggest export for foreign currency.
There's also the question of how. Many of Russia's banks are sanctioned. Doing business with them is difficult. So, yeah, Nabiullina's life suddenly got a lot more complicated for reasons outside her control. I can see why she'd want out.