I don't get the point. Whether Herman or Sarah says it, it is true. China is trying to develop Nuclear Capable Ships just like we have. Is the author trying to indicate that he is not intelligent enought to understand that? Even if he can't, what does it have to do with Herman's capabilities on Foreign Policy?
Cain is perfectly aware that China has nuclear capability. From an article he wrote about China (and Communism) in 2005:
“The U.S. should be less concerned about China’s economic potential than by the military threat it poses. Three Chinese spies were recently indicted in the U.S. for conspiring to steal numerous naval warship technologies. This summer China and Russia participated in a week-long joint military exercise. China’s build up of nuclear, military and space technologies to rival the U.S., and its saber-rattling over Taiwan’s independence, signals a commitment to more red, not green.”
http://www.economicfreedomcoalition.com/news/press-opinion-120305.asp