China's actions has been unsettling to neighbors: US

Recent actions by China concerning air space over the East China Sea have worried its neighbors and US vice president Joe Biden will raise this issue during a visit to Beijing next week, senior officials of the US administration said on Wednesday.

Recent actions by China concerning air space over the East China Sea have worried its neighbors and US vice president Joe Biden will raise this issue during a visit to Beijing next week, senior officials of the US administration said on Wednesday.

Biden is due to visit China, Japan and South Korea during a week-long trip. He will seek to de-escalate tensions heightened after China demanded that airplanes flying near contested islands identify themselves to Chinese authorities.

Biden will tell Chinese policy makers that "there's an emerging pattern of behavior that is unsettling to China's own neighbors, and raising questions about how China operates in international space and how China deals with areas of disagreement with its neighbors," an official told reporters on a conference call.