A NATO sub hunter captured these shots of a Russian submarine in waters newly surrounded by the alliance

• A NATO ally captured images of a Russian submarine in the Baltic Sea last week.
• The submarine was spotted by a Portuguese P-3 Orion maritime patrol aircraft.
• Russia conducted sub drills, including a torpedo duel, in the Baltic Sea recently.

A NATO ally's anti-submarine warfare aircraft captured photos of a Russian sub navigating the Baltic Sea last week, highlighting the alliance's continuous efforts to keep track of Russian activity in the undersea domain.