The Moscow City Court on June 26 sentenced Russian physicist Valery Golubkin to 12 years in prison on a treason charge. Golubkin was arrested in December 2020 and accused of handing his Dutch colleagues classified materials related to work on building a high-speed passenger plane on hydrogen fuel. Golubkin pleaded not guilty. He insists that the materials in question had been cleared for all involved in the research. Golubkin's supervisor, Anatoly Gubanov, was also arrested on a treason charge. His case is still pending. To read the original story by RFE/RL's Russian Service, click here.