CSIS: Russia’s Ukraine War Carries the Heaviest Postwar Casualty Toll

A CSIS report estimates Russia has suffered about 1.2 million casualties (killed, wounded, missing) since its full-scale invasion of Ukraine began, the highest toll for any major power in any war since World War II, with roughly 325,000 killed. Despite such losses, Russian advances have been slow and Moscow has gained less than 1.5% of Ukrainian territory since 2024, while the war is taking an economic toll on Russia. At Davos, Zelenskyy claimed December fatalities rose to about 35,000 per month and said Moscow mobilizes roughly 40,000–43,000 troops monthly.