WASHINGTON—The Pentagon conducted a Navy patrol in the South China Sea, U.S. officials said Wednesday, the first such operation under President Donald Trump designed to send a signal to China about U.S. intentions to keep critical sea lanes open in the Pacific Ocean. The patrol, known as a freedom of navigation operation, was conducted Wednesday around Mischief Reef, one of a chain of disputed islands in the South China Sea.

Source: Wall Street Journal May 24, 2017 22:18 UTC