The declassified US intelligence report reveals that the war in Ukraine has caused severe casualties to Russian forces, with an estimated 315,000 soldiers killed or injured. This represents almost 90% of the initial Russian personnel and has significantly impeded Russia's military modernization efforts by about 18 years. The report also highlights the heavy toll on Russian armored vehicles. Russian officials have disputed Western casualty estimates, while the conflict has hindered Russia's ground force modernization. Additionally, the report exposes the reliance on convicts and raised age limits for reserve forces.