United States Vice-President Joe Biden will visit China next week to convey concerns over its declaration of an air defence zone over disputed islands in the East China Sea, the White House said.
Meanwhile, US Defence Secretary Chuck Hagel assured his Japanese counterpart Itsunori Onodera that U.S. military operations will not change as a result of China's announcement and also appealed for exercising appropriate restraint from lodging protest, the BBC reports.
The statement came after China said that aircrafts crossing its air defence zone must obey the rules, failing which they might face "emergency defensive measures".
China's Air Defence Identification Zone (ADIZ) overlaps with an air zone set out by Japan and covers the disputed Senkaku islands.
