CNN'Leave immediately': US Navy plane warned over South China SeaCNNAbove the South China Sea (CNN) High above one of the most hotly contested regions in the world, CNN was given a rare look Friday at the Chinese government's rapidly expanding militarization of the South China Sea. Aboard a US Navy P-8A Poseidon ...China's state firms cementing lucrative role in South China Sea, new research showsReutersHow much trade transits the South China Sea?