According to the United Kingdom’s Government Communications Headquarters (GCHQ), the nation’s intelligence, cyber, and security agency, nearly half a million Russian soldiers have been killed since the start of Russia’s war in Ukraine that began in February 2022. The announcement was made by Anne Keast-Butler, who runs the agency, on 27 May.
Keast-Butler, who is the 17th person to run GCHQ, the UK analog to the US National Security Agency (NSA) located in Glen Burnie, Maryland, cited “new intelligence” when reporting these higher casualty figures but did not provide an exact casualty count. This estimate is significantly greater than figures published earlier this month, by almost 50 percent. That estimate had been calculated by the independent Russian media outlets Mediazona and Meduza.
Putin Can’t Hide War Losses in Ukraine
President of Russia Vladimir Putin at the at the BRICS+ meeting (via videoconference). Image Credit: Creative Commons.
Those two organizations estimated that 352,000 Russian men between the ages of 18 and 59 have been killed since the start of the full-scale invasion in February 2022. Russia’s government typically does not publish casualty figures, stating that they are classified.
Figures provided to date have come from official sources and are recognized as being both inaccurate and unreliable.
This has forced various organizations to manually and methodically verify accurate casualty figures.
This usually involves a combination of independent media and crowdsourced counts such as those conducted at Mediazona and the BBC.
These media centers manually verify Russian military deaths by scouring local news, obituaries, and social media, but this is inadequate for arriving at a true, accurate figure.
The combined estimate by those two above organizations is 221,206 thousand Russian dead as of 22 May, which is well south of the GCHQ assessment.
Additional Means of Verification
To compile a more accurate estimate, researchers will begin by using satellite imagery and burial analysis.
They will use high-resolution satellite photos to analyze the increase in the number of fresh graves in Russian cemeteries, which provides a framework estimate of the scale of the fatalities.
Ukraine Drone. Image Credit: Creative Commons.
Investigative groups also monitor Russian probate and court records to track legal cases filed by relatives seeking to have missing soldiers officially declared dead so they may receive state compensation.
Lastly, there are publicly released international estimates sometimes provided in unclassified form by Western intelligence services, as well as reports from well-known think tanks.
One such report was released earlier this year from the Washington, DC-based Center for Strategic and International Studies (CSIS). Notably, the overall assessment when combining all the available resources is that Russia’s losses of killed in action are far higher than previously reported.
A late January 2026 report from the US Public Broadcasting Service (PBS) estimates that by the beginning of summer, total losses by both sides in the war – dead, wounded, and missing – could reach the 2 million mark. However, the report finds “Russia suffering the largest number of troop deaths recorded for any major power in any conflict since World War II.”
How Much Greater Than Ukraine’s Are Russia’s Casualties?
Keast-Butler made these comments on Russian war dead in her inaugural public speech, delivering an assessment of the intelligence challenges facing the UK – particularly those threats from Russian President Vladimir Putin and his regime in Moscow.
“Russia is scaling up its daily hybrid activity against the UK and Europe, stretching from the seabed to cyberspace,” said Keast-Butler. But despite putting no end of resources into those efforts, she added, “Putin is going backward on the battlefield.”
Several independent Western assessments have consistently calculated that Russian losses significantly exceed those of Ukraine’s military. The January 2026 CSIS report finds that Russian casualties are double to 2.5 times greater than Ukraine’s losses. According to that CSIS report, Ukraine likely suffered between 500,000 and 600,000 casualties from February 2022 through December 2025, including an estimated 100,000 to 140,000 troops killed in action.
President Volodymyr Zelensky told France TV in a 4 February interview that at least 55,000 Ukrainian soldiers have been killed on the battlefield since the beginning of Russia’s full-scale war.
Ukraine’s General Staff reported on 27 May that Russia had lost about 1,358,950 troops since the beginning of the invasion on 24 February 2022, but this is an aggregate number that includes killed, injured, captured, and missing.
About the Author: Reuben F. Johnson
Reuben F. Johnson has thirty-six years of experience analyzing and reporting on foreign weapons systems, defense technologies, and international arms export policy. Johnson is the Director of Research at the Casimir Pulaski Foundation. He is also a survivor of the Russian invasion of Ukraine in February 2022. He worked for years in the American defense industry as a foreign technology analyst and later as a consultant for the U.S. Department of Defense, the Departments of the Navy and Air Force, and the governments of the United Kingdom and Australia. In 2022-2023, he won two awards in a row for his defense reporting. He holds a bachelor’s degree from DePauw University and a master’s degree from Miami University in Ohio, specializing in Soviet and Russian studies. He lives in Warsaw.
