I don't think this will win him many friends on this continent, but it is the first bit of info that one can trust being the least politicized...
U.S. enables Chinese hacking of Google - CNN.com (http://www.cnn.com/2010/OPINION/01/23/schneier.google.hacking/index.html)

In order to comply with government search warrants on user data, Google created a backdoor access system into Gmail accounts. This feature is what the Chinese hackers exploited to gain access.

Diogen.