A newly belligerent Russia has begun guided-missile cruiser patrols in northern waters, as Moscow reverts to some of its old Cold War practices.

The cruiser patrols near the Norwegian archipelago of Spitsbergen are required to ensure Russian maritime navigation security in the Arctic region, RIA Novosti quoted a Navy spokesman as saying. The Slava Class Marshal Ustinov cruiser began the patrols.

Just why Russian leaders now feel threatened there isn’t clear.

Earlier, an anti-submarine warfare ship, the Severomorsk, had been patrolling the northern waters.

Russia also has resumed submarine and bomber patrols, reminiscent of the Cold War era.