Imagery of the Subi Reef in the South China Sea, a part of the Spratly Islands group. Photo DigitalGlobe via Getty Images.
The big picture: A U.S. official told Reuters that the destroyer sailed within 12 nautical miles of Gaven and Johnson reefs in the Spratly Islands to counter Beijing’s efforts to limit freedom of navigation in the area. "[W]e have done [so] in the past and will continue to do in the future,” the official said. The decision comes just days after President Trump accused China of election interference and as trade tensions between the two nations continue to ratchet up.