US' double-dealing risky

China is justified in expressing "serious concern" about media reports that the United States is mulling plans to address China's island building in the South China Sea. It has cast a shadow over US Secretary of State John Kerry's upcoming visit to China over the weekend.

A Wall Street Journal report, citing an anonymous US official, said that the US is considering sending military ships and planes to within 12 nautical miles of the islands.

Clarification from the US is clearly needed. China has repeatedly explained its construction activities in the Nansha Islands fall within its sovereign waters and do not affect freedom of navigation or overflights.