Vietnam protests after China lands plane on disputed Spratlys

Chinese dredging vessels are purportedly seen in the waters around Mischief Reef in the disputed Spratly Islands in the South China Sea in this still image from video taken by a P-8A Poseidon surveillance aircraft provided by the United States Navy May 21, 2015. REUTERS/U.S. Navy/Handout via Reuters

HANOI (Reuters) - Vietnam formally accused China of violating its sovereignty and a recent confidence-building pact on Saturday by landing a plane on an airstrip Beijing has built on an artificial island in a contested part of the South China Sea.

Foreign Ministry spokesman Le Hai Binh said the airfield, had been "built illegally" on Fiery Cross Reef in the Spratly archipelago, in territory that was "part of Vietnam's Spratlys".