2. It’s being called one of the worst U.S. intelligence failures in years: More than a dozen C.I.A. informants in China have been killed or arrested since 2010, as Beijing dismantled American spying operations. We broke the story in May.

Now, an American is suspected of having helped Beijing by identifying the informants. Jerry Chun Shing Lee, who left the C.I.A. in 2007, was apprehended in New York this week.

Above, an honor guard outside the Great Hall of the People in Beijing last year.

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