China 'must stop' cyberespionage, warns US National Security Advisor Rice

China's government must halt economic espionage in cyberspace, U.S. National Security Advisor Susan Rice warned on Monday, days before Chinese President Xi Jinping is due in Washington, D.C., on an official visit.The issue has become a major thorn in the side of U.S.-China relations in the last year, especially in the wake of the breach of personal information of tens of millions of U.S. government workers at the Office of Personnel Management. The U.S. hasn't publicly accused Chi