evidence: The People’s Republic of China (PRC) Ministry of National Defense (MND) announced the creation of the East China Sea Air Defense Identification Zone (ADIZ) on Saturday, November 23. The MND also announced Aircraft Identification Rules for the ADIZ, which include a warning that "defensive emergency measures" would be adopted to respond to aircraft that refuse to follow the instructions. The zone overlaps the existing ADIZ of Japan, South Korea, and Taiwan. China’s ADIZ covers the disputed Senkaku/Diaoyu Islets claimed by China, Japan, and Taiwan. One day following the announcement, China conducted two aerial patrols over the area involving Tu-154 and Y-8 aircraft, prompting the Japan Air Self-Defense Force to send two F-15 fighter jets to intercept them. The announcement elicited immediate responses from Japan, the United States, the Republic of Korea (ROK), Australia, and Taiwan.