Cyberwar: A cybersecurity firm reports a secretive Chinese military unit is behind many recent "hack attacks" into U.S. computers, stealing trade and military secrets and developing a potentially crippling new weapon. In a 2009 editorial we noted that units of China's armed forces, whom we dubbed its "Cybertooth Tigers" were developing capabilities to penetrate and potentially disrupt U.S. computer systems as part of the People's Liberation Army's focus on what is known as "asymmetrical" warfare, specifically cyber-warfare. At least as far back as the 2008 edition of the Pentagon's annual report to Congress entitled "Military Power of the People's Republic...