Anton Troianovski Paul Sonne The Washington Post

Russia on Wednesday conducted a final test of a nuclear-capable glider that flies at 20 times the speed of sound, President Vladimir Putin said, adding that the weapon will be added to the country's arsenal next year.

Russia on Wednesday conducted a final test of a nuclear-capable glider that flies at 20 times the speed of sound, President Vladimir Putin said, adding that the weapon will be added to the country's arsenal next year.