China’s then Public Security Minister Zhou Yongkang attends the Hebei delegation discussion sessions at the 17th National Congress of the Communist Party of China at the Great Hall of the People, in Beijing in this October 16, 2007 file photo. China has begun an investigation into former domestic security chief Zhou Yongkang, one of the most powerful politicians of the last decade, on suspicion of corruption, state media said on July 29, 2014, in what could be one of the country’s worst scandals. Picture taken on October 16, 2007. REUTERS/Jason Lee (CHINA – Tags: POLITICS CRIME LAW)