MI5's Director General Ken McCallum highlighted growing threats from Russia's GRU, Iran, and terrorist groups like al Qaeda and Islamic State. Investigations into state threats have surged by 48% over the past year.

The head of Britain’s domestic security service said Russia’s military intelligence service was pursuing “dangerous actions conducted with increasing recklessness.”

The head of Britain's domestic spy agency accused Russian military intelligence of being on a "sustained mission to generate mayhem."

Britain is facing a “staggering rise” in assassination attempts on its soil by Russia and Iran, as the hostile states recruit criminals to “do their dirty work” for them, the head of the U.K.’s domestic intelligence agency warned Tuesday.

Russia's GRU military intelligence service is seeking to cause "mayhem" across Britain and Europe, the UK's domestic spy chief said on Tuesday, while a growing threat from resurgent al Qaeda and Islamic State was his greatest terrorism concern.

Head of U.K.’s MI5 warns that Russia and Iran are hiring low-level criminals to undertake sabotage missions and attacks on dissidents in Europe.

Russian military intelligence is seeking to cause "mayhem" across Britain and Europe, the UK's domestic spy chief said on Tuesday, while a growing threat from al Qaeda and Islamic State was his greatest terrorism concern.

Russian spies are “on a sustained mission to generate mayhem in British streets”, the head of MI5 has said. Ken McCallum said that as the war in Ukraine continues, the security services were seeing “Putin’s henchmen seeking to strike elsewhere in the misguided hope of weakening Western resolve”.