Sea Spat Raises China-Vietnam Tensions

Vietnam protested to China Thursday after what it claimed was a "premeditated" attack on an exploration ship in its waters, but Beijing hit back, warning its neighbour against violating its sovereignty.

The latest incident comes against a backdrop of increased anti-Chinese sentiment in Vietnam, where hundreds of people staged a rare protest Sunday over the activities of Chinese ships in disputed waters.

With ties between Beijing and Hanoi at their lowest ebb in years owing to territorial spats over potentially oil-rich waters, Prime Minister Nguyen Tan Dung vowed to protect Vietnam's "incontestable" sovereignty.