Photo taken on a marine surveillance plane B-3837 on Dec. 13, 2012 shows the Diaoyu Islands and nearby islands. A Chinese marine surveillance plane was sent to join vessels patrolling the territorial waters around the Diaoyu Islands on Thursday morning, according to China's maritime authorities. Photo: Xinhua
Photo taken on a marine surveillance plane B-3837 on Dec. 13, 2012 shows the Diaoyu Islands and nearby islands. A Chinese marine surveillance plane was sent to join vessels patrolling the territorial waters around the Diaoyu Islands on Thursday morning, according to China's maritime authorities. Photo: Xinhua