China is investing in Silicon Valley start-ups with military applications at such a rapid rate that the United States government needs tougher controls to stem the transfer of some of America’s most promising technologies, a Pentagon report says. There are few restrictions on investing in American start-ups that focus on artificial intelligence, self-driving vehicles and robotics, the report contends, and China has taken advantage. Beijing, the report says, is encouraging its companies to invest for the purpose of pushing the country ahead in its strategic competition with the United States. Read more