Range: South Korea's ADIZ boundary is far from its territorial airspace, to guarantee that it can deal with unknown situations effectively.Farthest distance from its territorial airspace: 390 kilometers.However, territorial disputes still exist, as the zone is not recognised by Japan's neighbors, Russia and China. Once its own aircraft, land, or vessels are attacked, a defense war will be launched. Japan follows a warning sequence for unidentified aircraft: radar detection, emergency calls, fighter emergency launch, requiring forced landing, and bomb warning. It was only until 1969 that the US transferred the management of the zone to Japan.Īfter that, Japan expanded the zone westward twice, once in 1972, the other in 2010. Range: Covers its territorial airspace, seas and Exclusive Economic Zone, as well as China's Diaoyu Islands territorial airspace and seas in the west.Īfter Japan's surrender in 1945, the US demarcated an identification zone off Japan's coasts, but it was under the control of the US military in Japan.Farthest distance from its shoreline: 800 kilometers.Number of ADIZs:4 (northern, centre, western and southwestern).Besides the American mainland, Alaska, Guam and Hawaii all have ADIZs, which extend towards Russia, China and North Korea respectively. set up ADIZs according to geographical location. Farthest distance from its shoreline: 250 nautical miles.Number of ADIZs:4 (The Contiguous US ADIZ, Alaska ADIZ, Guam ADIZ and Hawaii ADIZ).However, the 9/11 attacks have once again made ADIZs an important issue over the last decade.ĪDIZs of major countries The United States Later, after ICBMs were developed and the Soviet Union had been dissolved, the North American ADIZ became less important. and Canada established the world's first-ever ADIZ – the North America Air Defense Identification Zone in the 1950s. To increase the response distance and time for an early warning, the U.S. and the Soviet Union put a large number of high-speed jet fighters into service, which put a number of countries' traditional air defense at risk. In 1940, the United States proposed the idea of "establishing a network for airspace vigilance along its coasts." After World War II, military powers led by the U.S.