The Rest Is Classified
The Rest Is Classified

Intelligence Scoop: The Biggest Threats to Britain, Live From MI5

October 13, 2026 • 48m

Summary

⏱️ 7 min read

Overview

In this episode, Gordon Corera reports directly from MI5 headquarters where Director General Sir Ken McCallum delivered his annual threat assessment. The briefing covered escalating state threats from Russia, Iran, and China, the emerging dangers of AI-enabled terrorism, and the mysterious incident at RAF Fairford involving potential Iranian attacks on US military assets. The discussion explores how traditional security threats are being transformed by new technologies, particularly autonomous drones and artificial intelligence.

Russia's Continuing Aggression and Brexit Interference

Sir Ken McCallum confirmed that MI5 is now devoting more resources to countering state threats than during the Cold War, with caseload dealing with espionage and sabotage quadrupling in the last decade. Russia remains 'aggressor number one' as Putin's Kremlin escalates hybrid warfare attempts to intimidate the UK and weaponize division through social media. Prime Minister Andy Burnham recently admitted that Russia did interfere in the 2016 Brexit referendum, though McCallum was cautious about claiming it affected the results, noting the political sensitivity of the topic and warning against letting Russia 'get into our heads' about their effectiveness.

  • MI5 is devoting more resources to state threats than during the Cold War, with caseload quadrupling in 10 years
  • Russia remains 'aggressor number one' as Putin's Kremlin continues hybrid warfare attempts
  • Prime Minister Burnham confirmed Russia interfered in the 2016 Brexit referendum
  • McCallum cautious about saying Russian interference affected Brexit results
" Russia remains aggressor number one as Putin's Kremlin continues to lash out at the UK and its allies. "
" Was there interference in the 2016 referendum from Russia? And I've had the clear answer that yes, there was. And these things are important now to put clearly on the record and, I believe, help voters in Germany and France understand that some of this politics is instigated via our enemies, namely Russia. "

AI as an Emerging Security Threat

Sir Ken McCallum devoted significant attention to artificial intelligence as a transformative threat, discussing how AI is turbocharging cyber attacks, enabling personalized propaganda and radicalization content, and helping terrorists improve reconnaissance and attack methodologies. While acknowledging various AI-enabled threats including autonomous drones, McCallum identified bioweapons as the most serious concern—the possibility that AI could help create new deadly pathogens or make existing ones more accessible. MI5 has established a new AI Threat Assessment Center to provide objective analysis of these rapidly evolving dangers.

  • AI is turbocharging cyber threats and making it easier to hack systems
  • Terrorists are seeking to exploit AI for improved reconnaissance and attack methodologies, including AI-enabled drones
  • McCallum's greatest worry is AI's potential to enable bioweapons development
  • MI5 has created a new AI Threat Assessment Center alongside existing terrorism and state threat centers
  • MI5 is investigating a radicalized extreme right-wing 13-year-old in the UK
" The misuse case to which I'd attach greatest weight is AI's potential to change the stakes on existing or even new bioweapons. These risks are real. "

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