A 2012 photo of Zhou Yongkang, the then-Chinese Communist Party Politburo Standing Committee member in charge of security. Zhou has been sentenced to life in prison over charges of corruption. Lee Jin-man/AP hide caption

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"The two armies of corruption and anti-corruption are at a stalemate," China's president, Xi Jinping, reportedly told a closed-door Politburo meeting in late June. Jorge Silva/Reuters/Landov hide caption

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Zhou Yongkang, who at the time was Chinese Communist Party Politburo Standing Committee member in charge of security, attends a plenary session of the National People's Congress at the Great Hall of the People in Beijing, China in 2012. Ng Han Guan/AP hide caption

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