The US, China and a New Round of Cyberwarfare

It's not just defense contractors and diplomats any more. Hackers traced to China have broken into the New York Times, Wall Street Journal, Washington Post and other major news outlets. Reporters themselves are not the targets. The most likely ones are the Chinese sources for reports on the personal fortunes of Party leaders. Are liberty -- and even lives -- at risk as they try to polish their own images and control the narrative both outside and inside the country?  The Obama Administration is weighing retaliation if China won't play by the rules, but what are the rules?  If the US was responsible for Stuxnet, how can it complain now?