In a recent interview with Yonhap News, David Straub, associate director of the Korea Program, says "Although the United States and the PRC certainly have differences [in dealing with the North Korean nuclear issue], they pale in copmarison to U.S.-Soviet differences."

Yonhap News article in English (February 12, 2016)

Straub also offers, in an extended interview with South Korea's Segye Ilbo newspaper, his thoughts on Pyongyang's motivations for pursuing nuclear weapons. He argues that the appropriate policy response is to continue to increase pressure on the regime to convince it that nuclear weapons will bring more costs than benefits, while holding open the door to good-faith negotiations to resolve peninsular issues. 

Segye Ilbo article in Korean (January 8, 2016)