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UK MI6 spy chief warns of 'aggressive' Russia threat in first speech

Published by Global Banking & Finance Review

Posted on December 15, 2025

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· Last updated: January 20, 2026

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LONDON, Dec 15 (Reuters) - The head of Britain's Secret Intelligence Service, the foreign spy service known as MI6, will warn that Russia poses an "aggressive, expansionist, and revisionist" threat,

MI6 Chief's First Speech Warns of Aggressive Russia Threat

LONDON, Dec ‌15 (Reuters) - The head of Britain's Secret Intelligence Service, the foreign spy service ‍known ‌as MI6, will warn that Russia poses an "aggressive, expansionist, and revisionist" threat, in ⁠her first speech since taking office.

Blaise ‌Metreweli took over from Richard Moore in October, becoming the first female chief of MI6 - a role publicly known by the codename "C" - in its 116-year history.

"(Vladimir) Putin should be in no ⁠doubt, our support is enduring. The pressure we apply on Ukraine's behalf will be sustained," Metreweli ​will say on Monday, according to advance extracts of ‌her remarks.

"The export of chaos is a ⁠feature not a bug in the Russian approach to international engagement, and we should be ready for this to continue until Putin is forced to ​change his calculus."

Britain has sanctioned several Russian business figures, political leaders, companies, ships, and entities, including the entire GRU military intelligence agency, since Russia's invasion of Ukraine in 2022.

Over the weekend, Germany hosted U.S. and Ukrainian delegations for talks ​on a ‍ceasefire deal, before a ​summit in Berlin later on Monday that will include European leaders.

Metreweli will also highlight the need to ramp up the use of technology to tackle threats to UK security, including terrorism and information warfare.

"Mastery of technology must infuse everything we do. Not just in our labs, but in the field, in our tradecraft, and even ⁠more importantly, in the mindset of every officer. We must be as comfortable with lines of code as we ​are with human sources, as fluent in Python as we are in multiple languages," she will say.

Richard Knighton, head of Britain's armed forces, will also call in a separate speech on Monday for a "whole society" approach ‌to defence in the face of growing uncertainty and threats, and highlight an increased probability of Russia invading a NATO country.

(Reporting by Suban Abdulla;Editing by Christina Fincher)

Key Takeaways

  • MI6's first female chief warns of Russia's aggressive threat.
  • UK's enduring support for Ukraine emphasized.
  • Need for technology in defense highlighted.
  • Risk of Russia invading a NATO country discussed.
  • Whole society approach to defense urged.

Frequently Asked Questions

What is MI6?
MI6, or the Secret Intelligence Service, is the United Kingdom's foreign intelligence service responsible for dealing with international intelligence matters.
What are sanctions?
Sanctions are penalties imposed by countries or international bodies on nations or individuals to influence behavior, often in response to violations of international law.
What is information warfare?
Information warfare involves the use of information and communication technologies to gain a competitive advantage, often through the manipulation of information.

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