China has sentenced a 78-year-old American to life in prison on spying charges, as the world’s No. 2 economy prioritizes eliminating national security risks. John Leung, who is also a Hong Kong permanent resident, was sentenced in the eastern Chinese city of Suzhou on Monday, according to the court’s official WeChat page. In addition, some 500,000 yuan ($71,808) of Leung’s property was…