China warns U.S. it will not allow violations of its waters

China said on Friday it would not stand for violations of its territorial waters in the name of freedom of navigation, as the United States considers sailing warships close to China's artificial islands in the South China Sea.

A U.S. defense official told Reuters on Thursday the United States was considering sending ships to waters inside the 12-nautical-mile zones that China claims as territory around islands it has built in the Spratly chain .... http://www.reuters.com