Beijing accused the Philippines of "illegally" intruding into Scarborough Shoal, a reef over 500 miles from Chinese shores.

A Philippine plane warned a Chinese military helicopter over the South China Sea that it was "flying too close," as tension between the U.S. ally and Beijing soars.

Seoul, South Korea (CNN) — A Chinese military helicopter flew within 10 feet (3 meters) of a Philippine patrol plane over the South China Sea on Tuesday, in what observers said was the second ...