I agree, it's a shame.
The problem with Russia is its government, not its citizens, and it feels unfair that they are getting caught up in all these sanctions when only crime is being Russian.
But unfortunately, such economic collateral damage appears to be unavoidable.
Will this affect the availability of tubes, I wonder? I ask because for many years now – long after becoming obsolete in the US – Russia has been pretty much the only source of new tubes as far as I know.
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