U.S. Army soldier arrested in Britain over suspected spying for Russia

A senior U.S. Army soldier serving at a NATO headquarters in Britain has been arrested on suspicion of spying for Russia. London's Metropolitan Police announced Tuesday evening that the unnamed 41-year-old was arrested near Gloucester in western England earlier that day. He is being detained in London.

The inquiry is being conducted by the U.K.'s Counter Terrorism Policing, with British investigators working alongside U.S. authorities, including the military and the FBI. Police said searches were taking place at two addresses in Gloucestershire. Authorities also said the case was unrelated to any other continuing Counter Terrorism Policing investigations.

A senior NATO military official confirmed Tuesday that the soldier was assigned to the Allied Rapid Reaction Corps, or ARRC. Based in Gloucestershire, the three-star NATO headquarters has more than 400 permanent personnel drawn from over 20 countries and is ready to deploy land forces wherever required.

The suspected offenses fall under Sections 1 and 3 of Britain's National Security Act. Section 1 covers obtaining or disclosing protected information and carries a maximum sentence of life imprisonment. Section 3 concerns assistance to a foreign intelligence service and has a maximum prison term of 14 years. Either offense can also result in a fine.

Moscow denied involvement Wednesday. Kremlin spokesman Dmitry Peskov told reporters that Russia had "absolutely nothing to do with" the British case. In a statement Tuesday evening, FBI Director Kash Patel described the allegations against the American service member as "of the utmost concern to the United States and our allies." He also said the bureau would not tolerate conduct that violated an oath to the United States and endangered American or partner security.

Sean Stinchon, commanding general of U.S. Army Counterintelligence Command, said the allegations involved a senior soldier entrusted with sensitive information. He described the alleged conduct as "a sobering reminder that insider threats are real and persistent."

The arrest coincides with Washington's effort to negotiate an end to Russia's war in Ukraine. Russian and Ukrainian officials began U.S.-mediated discussions in Abu Dhabi on Tuesday, their first such meeting since February. Kyiv and its European allies are continuing to seek credible security guarantees in any agreement. President Donald Trump said Monday that both sides appeared increasingly willing to end the almost five-year conflict.

Trump has long criticized NATO and its members' defense spending. Russia, meanwhile, has threatened retaliation over NATO's eastward expansion and previously sought assurances that Ukraine would never join. Finland entered the alliance in 2023, followed by Sweden in 2024. During the war, reports of Russian activity farther inside European and NATO territory have prompted regional investigations into possible Moscow involvement in recent disruptions.

In a separate case, British prosecutors announced on Oct. 27 that a man had been charged with assisting a foreign intelligence service following an incident at RAF Fairford. The Gloucestershire military base, used by the United States for strikes on Iran, is approximately 30 miles from ARRC's headquarters at Imjin Barracks.