/cloudfront-us-east-2.images.arcpublishing.com/reuters/2Q7FVA44ANIE3HR6QBBMKDTJTY.jpg)
Russia says hypersonic missile scientists face 'very serious' treason accusations
Three Russian academics who have worked on hypersonic missile technology face "very serious accusations", the Kremlin said on Wednesday, in a treason investigation that has spread alarm through Russia's scientific community.
