Britain said its aircraft carrier in the Norwegian Sea was repeatedly approached by a Russian patrol aircraft before being escorted away by UK fighter jets, in the latest incident risking a potential escalation between NATO and Russia.
The incident, which Britain called "unsafe and unprofessional," comes ahead of a NATO meeting in Ankara on Tuesday, where NATO members are set to pledge €70 billion in military assistance to Ukraine for 2026.
Britain said the Russian "Bear-F" maritime patrol aircraft passed at low altitude and "unnecessarily close" to HMS Prince of Wales, the aircraft carrier at the center of a naval formation known as a carrier strike group, on July 2.
"The Bear-F...dropped a large number of sonobuoys in close proximity to the carrier," the UK Defense Ministry said in a statement, referring to devices which are used to detect and track submarines.
Two F-35 fighter jets from the HMS Prince of Wales were sent to intercept the Russian aircraft until it left the area.
UK strike group deployed in High North under NATO
Britain's carrier strike group is currently deployed under NATO command in the High North, as part of efforts to bolster North Atlantic security amid concerns over Russian aggression in the region.
Earlier this year, Britain deployed military vessels to prevent attacks on cables and pipelines by Russian submarines that spent more than a month in and around UK waters.
Britain said in a separate statement on Monday that UK Defense Minister Dan Jarvis had recently visited UK forces onboard the aircraft carrier in waters near Iceland.