Chinese nuclear-powered submarine sank this year, US official says ReutersEmbarrassment for Beijing? US claims Chinese nuclear attack submarine sank this year Hindustan TimesChina’s newest nuclear submarine sank in dock, US officials confirm The GuardianAnother Wuhan disaster: US says China’s latest state-of-the-art submarine sank while in dock The Times of IndiaChina’s Nuclear-Submarine Mishap Points to Challenge of Catching Up With U.S. The Wall Street Journal