Sky News Australia | US warship challenges China's claims Sky News Australia A US Navy warship has sailed within 12 nautical miles of an artificial island built up by China in the South China Sea, US officials say, marking the first such challenge to Beijing in the strategic waterway since US President Donald Trump took office. US says Navy ship sails near South China Sea reef claimed by Beijing South China Sea: US warship challenges China's claims with first operation under Trump South China Sea: US warship sails close to disputed Mischief Reef |