“Russian submarine activity in the North Atlantic is currently equalling or even surpassing Cold War levels, according to NATO’s top naval officer.
The North Atlantic was again and area ‘of concern’ for the alliance, Vice Admiral Clive Johnstone, Commander of NATO’s Maritime Command, said, with the commanders of his submarine cells currently reporting ‘more activity from Russian submarines than we’ve seen since the days of the Cold War’.
Not only are Russian submarines returning to Cold War levels of operational activity, but Russian submarines have made a major jump in technological performance, Vice Adm Johnstone said, with NATO seeing ‘a level of Russian capability that we haven’t seen before’.”
Source: Russian submarine activity topping Cold War levels | IHS Jane’s 360