China killed or jailed up to 20 US spies in 2010-12: report

Beijing systematically dismantled CIA spying efforts in China beginning in 2010, killing or jailing more than a dozen covert sources, in a deep setback to US intelligence there, The New York Times reported Sunday.The Times, quoting 10 current and former American officials who spoke on condition of anonymity, described the intelligence breach as one of the worst in decades.It said that even now intelligence officials are unsure whether the US was betrayed by a mole within the CIA or whether the C