I’ve always said that Russians are only a good, competent military when you’re inside their borders....the exception being World War II (mainly because they wanted revenge against the Germans). Now, if they designed a Nuclear sub to roam the Black Sea, they could make it perfectly stealthy.
But what purpose would *that* serve? Tiny neighboring nations....ones with oil or major oil pipelines wouldn't be frightened by *that*.And the cowering scumbags populating western and central Europe whould have no need to shout "anything you say,Ivan...just don't shut off our gas supplies".