China's Communist Party is a threat to the world, says former elite insider

Hong Kong (CNN)Cai Xia is no stranger to defying expectations. During her years at the Chinese Communist Party's top training center and think tank, the outspoken professor had surprised many with her liberal ideas and support for democratic reform. More recently, she caused a stir with a spate of scathing denunciations of China's ruling elite and the country's leader Xi Jinping -- a rare rebuke from a longtime insider that led to her expulsion from the Party earlier this week. In an interview with CNN from the United States, where she has lived since last year, Cai went a step further by calling on the US government to double down on its hardline approach towards Beijing. She said she...