The head of GCHQ, Anne Keast-Butler, has stated that Russia has lost 500,000 soldiers since its full-scale invasion of Ukraine began in 2022. Speaking at Bletchley Park, she said the figure demonstrated that President Vladimir Putin was “going backwards on the battlefield”.
Keast-Butler warned that Russia was risking a wider conflict in Europe by targeting critical infrastructure and supply chains. She also accused Moscow of “scaling up its daily hybrid activity against the UK and Europe”, including espionage plots in multiple countries.
Western intelligence and independent analysts estimate that both Russia and Ukraine have suffered hundreds of thousands of casualties, with Moscow’s losses significantly higher. Exiled Russian media outlets Meduza and Mediazona recently suggested close to 352,000 Russian soldiers had been killed by the end of 2025. Ukraine’s President Volodymyr Zelensky said in February that Ukraine had lost 55,000 soldiers.
Keast-Butler also highlighted the threat from artificial intelligence, describing it as “an unstoppable force” being weaponised below the threshold of traditional warfare. She noted that Russia and China were investing heavily in cyber capabilities, with China’s “Salt Typhoon” campaign targeting over 80 countries.
“The risk of miscalculation is as high as I’ve ever seen it,” she said, urging businesses to take immediate action on cybersecurity to protect national security and the economy.
