The destruction by Chinese security agencies of the C.I.A.’s operations inside the country, including the imprisonment or execution of a dozen Chinese nationals secretly working for the United States, is considered one of the most devastating intelligence setbacks for the agency in recent decades. With Mr. Lee’s arrest and the continuing investigation, inquiries at the C.I.A. and the F.B.I. into how it unfolded and what mistakes were made are likely to go on for years
www.nytimes.com/2018/01/18/world/asia/jerry-lee-cia-china-informant-network-ministry-of-state-security.amp.html