Assoc Prof Chong Ja Ian on China expelling two ex-defence ministers from Communist Party

China's high-profile expulsion of former defence ministers Li Shangfu and his predecessor Wei Fenghe from the Communist Party over graft charges is the latest in President Xi Jinping's years-long campaign to crack down on corruption. Associate Professor Chong Ja Ian from the National University of Singapore shared more about the significance of this latest purge.