Long term high interest rates plus high cost of import supplies will likely strangle the economy though. Increased demand for domestic goods due to higher import prices is a good thing, but one needs capital to operate most businesses. When interest rates are high you can't borrow, and when political situation is flaky fewer people will want to buy equity.
1) Increase the rate to something truly insane like 1000%
2) Introduce currency controls and force everyone to use Ruble
Neither of these options are good, but #2 seems much more likely.
It will be a bit more complicated this time.
They might not have any other option though.