Vietnamese protesters shout anti-China slogans at Ly Thai To park in Hanoi. Photograph: EPA/Luong Thai Linh

China has sent four more oil rigs into a disputed area of the South China Sea less than two months after it placed a giant drilling platform in wat(...)

Vietnamese protesters shout anti-China slogans at Ly Thai To park in Hanoi. Photograph: EPA/Luong Thai Linh

China has sent four more oil rigs into a disputed area of the South China Sea less than two months after it placed a giant drilling platform in water(...)