Britain revealed on Thursday, April 10, 2026, that it tracked and deterred three Russian submarines during a month-long alleged "covert operation" in the North Atlantic, near critical undersea cables and pipelines. British Defence Secretary John Healey disclosed the joint mission with Norway and other allies, emphasizing that while the Russian vessels were monitored by British warships and military aircraft, there was no evidence of damage to the subsea infrastructure. Healey stated the operation's disclosure was intended to "call out this Russian activity" and convey a message to Russian President Vladimir Putin.