The Russian Ministry of Defense was notified Friday that the U.S. Navy would have ships in the Barents Sea. The notification was made to avoid misperceptions, reduce risk and prevent inadvertent escalation.
Days before heading into the Barents Sea, several of the same ships–along with a Navy submarine and P-8A Poseidon–were in the Norwegian Sea for an anti-submarine warfare exercise. About 1,200 sailors from the U.S. and Royal Navies participated in that exercise.
Navy leaders in Europe have warned that a surge in Russian submarine activity is posing new challenges for NATO allies. The Russian subs are deploying with more lethal weapons systems and staying out for longer periods, VADM Andrew 'Woody' Lewis, commander of 2nd Fleet, said earlier this year.
The process of an increase in the intensity or seriousness of something.
Submarine, a warship designed to move and operate under water.
Subs are usually armed with torpedoes or nuclear weapons.