U.S. and China defense chiefs exchange tough words at security conference | CNN

U.S. and China defense chiefs exchange tough words at security conference

The U.S. and China defense chiefs traded tough words at a security conference in Singapore. That, as the U.S. says a Chinese military ship came close to colliding with a U.S. destroyer in the Taiwan Strait. Laila Harrak speaks with Ravi Agrawal, Managing Editor of Foreign Policy.