Amid ongoing instability in Europe and the war in Ukraine, naval forces from the United States, Germany, and Norway conducted joint anti-submarine warfare drills in the Barents Sea, an area marked by increased Russian undersea activity.
According to the Royal Norwegian Navy, the frigate HNoMS Thor Heyerdahl (F314) joined the German Navy Sachsen-class frigate FGS Hamburg (F220) and U.S. Navy Arleigh Burke-class destroyers USS Mahan (DDG 72) and USS Bainbridge (DDG 96) in a combined mission above the Arctic Circle. The exercise focused on coordinated reconnaissance and submarine-hunting operations.
Destroyer Squadron Two, part of Carrier Strike Group 12, participated as part of its scheduled deployment to the U.S. 6th Fleet. The Navy said the drills enhance “the warfighting effectiveness, lethality and readiness of U.S. Naval Forces Europe-Africa and defend U.S., Allied and partner interests in the region.”
The Barents Sea has become a flashpoint, with Russia maintaining its largest concentration of naval nuclear forces in the area. NATO’s presence reflects concern over Moscow’s ability to project power from Arctic bases into the North Atlantic and Northern Europe.
For Norway, Germany, and the United States, the training demonstrated allied readiness and provided a venue to refine anti-submarine tactics. The participating warships integrated sonar, surveillance, and strike capabilities to track potential threats in contested waters.
The patrol underscores NATO’s vigilance in the High North, where Russia’s submarine fleet remains central to its strategic deterrent. With the war in Ukraine ongoing and the Arctic gaining geopolitical weight, such exercises signal allied determination to counter challenges beneath the surface.
In parallel, U.S. and NATO aerial forces mounted an intensive search for Russian Yasen-class nuclear attack submarines believed to be operating near the carrier USS Gerald R. Ford. The submarines reportedly sailed from Zapadnaya Litsa on Russia’s Kola Peninsula.
The search involved U.S. Navy P-8 Poseidon maritime patrol aircraft flying from Scotland, Iceland, and Norway. Flight tracking data from Flightradar24 recorded several dozen sorties over 48 hours, reflecting a concentrated effort to locate Russian undersea assets.

