The UK and Norwegian militaries conducted an operation to deter Russian submarines in the North Atlantic, monitoring a Russian attack submarine and two spy submarines. British Defence Secretary John Healey emphasized the seriousness of any threats to undersea infrastructure. The UK is prepared to take action against ships violating sanctions related to Russia's war in Ukraine. Joint naval patrols between the UK and Norway aim to protect undersea cables, with increased Russian naval activity noted. NATO experts warn of persistent threats to Western infrastructure from Russian activities.