What is the future of China-U.S. relations? Will the continued tensions between the two countries lead to a so-called "new Cold War"? In the Hub with Wang Guan, Stephen A. Orlins, president of the National Committee on U.S.-China Relations, points out that the definition of "national security" has been broadened so much that it has become a "destructive" concept. Restrictions on technology and joint research are "ridiculous" and "punishing," he reckons.