A former U.S. Marine held in Russia for more than four years on disputed charges is gravely ill and at risk of dying, his family and advocates said Friday.

Robert Gilman, 32, is being held at a Russian hospital in what his advocate, Eric Lebson of Global Reach, described as a "dissociative stupor."

Robert Gilman, jailed in Russia since 2022, is in critical condition after reportedly being tortured and injected with mind-altering drugs, advocates say; The US has urged Moscow…