Japan Maritime Self-Defense Force's PC3 surveillance plane flies around the disputed islands in the East China Sea, known as the Senkaku isles in Japan and Diaoyu in China, in this October 13, 2011 file photo. Asian aviation officials on November 25 said airlines would have to inform China of flight plans before entering airspace over waters disputed with Japan, forcing carriers to acknowledge China's authority over a newly declared “Air Defense Identification Zone” — Photo: Reuters

(VOVworld)- Japanese Prime Minister Shinzo Abe said Monday that Japan is seriously concerned about the air defense identification zone (ADIZ) set up by China in the East China Sea. Abe said unilateral Chinese action can change the situation in the East China Sea and escalate tension in the region. He said Japan will oppose any use of force and is determined to protect its coastal areas and airspace. Last Saturday China announced its new air defense zone requiring all passing by aircraft to maintain radio contact, reveal their air route, and obey the instructions of Chinese authorities. Japanese Foreign Minister Fumio Kishida, has said that Japan does not accept the ADIZ, which contains the territory disputed by the two countries, Senkaku/ Diaoyu Island. Chinese Foreign Ministry spokesperson Qin Gang called Japan’s criticism “totally unproved and unacceptable”.