China is embroiled in disputes with Vietnam, the Philippines and others over boundaries in the potentially energy-rich South China Sea and has said it seeks to resolve differences in one-on-one talks with the countries involved.
Beijing and Tokyo are also at loggerheads over disputed islands in the East China Sea.
"The president and I shared the deep concerns over the current extremely dangerous situation caused by China's many actions that violate international law," Dung said in a statement after talks with Philippine President Benigno Aquino during a two-day visit to Manila.
"...In particular, China's illegal placement of the oil rig and deployment of vessels to protect the rig deep into Vietnam's continental shelf and exclusive economic zone have seriously threatened peace, stability, maritime security and safety, and freedom of navigation in the East Sea."
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