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MI5 ramps up state-threat resources, calls Russia top aggressor

By Drooid · Oct 13, 2026, 4:01 PM UTC · How we work

Summary

Story summary

Sir Ken McCallum says MI5 devotes more resources to state threats than during the Cold War.
He called Russia the UK’s top aggressor, noting 1,000 Russian spies expelled since the Ukraine invasion.
Iran-linked activity led to 50 arrests last year, targeting Jewish communities and military sites.
MI5 seized terrorists using AI drones, warned of AI bioweapons, while the threat level rose to severe in April.

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Story summary

Sir Ken McCallum says MI5 devotes more resources to state threats than during the Cold War.
He called Russia the UK’s top aggressor, noting 1,000 Russian spies expelled since the Ukraine invasion.
Iran-linked activity led to 50 arrests last year, targeting Jewish communities and military sites.
MI5 seized terrorists using AI drones, warned of AI bioweapons, while the threat level rose to severe in April.