Senator Jim Webb grasps an electronic pointer and traces an arc on a map of the South China Sea, marking out the maritime boundaries of Beijing’s Asian neighbours.
The map, which reflects Beijing’s claim over the oceans just off the coasts of the Philippines, Malaysia and Vietnam, is becoming a new flashpoint in US-Sino relations.
Chinese vessels have clashed with Vietnamese and Filipino boats off the coasts of the two Asian countries in recent months, and Beijing has protested noisily at US efforts to help mediate the dispute.
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