Under long-term sanctions from the United States and Western countries, Iran Air's aviation industry seeks development in adversity and has successfully built a new generation of "Yassin" trainer - the new starting point of Iran Air industrial station above: Iran's domestic "Lightning" fighter. On March 11th, the Iranian military held an unveiling ceremony in Tehran for the new generation of domestically produced "Yasin" trainer aircraft and its production line. The Iranian military stated that the biggest feature of the "Yasin" training aircraft is its high degree of localization, and the main components of the aircraft are all manufactured domestically in Iran. After future mass production, it can not only be used as a training aircraft, but also be transformed into a light fighter jet for practical use, which will help improve the combat capability of the Iranian Air Force. Looking at the world, there are not many countries that can completely rely on their own strength to complete the research and development of key components for jet aircraft, and to design and produce the entire machine. Although "Yassin" is only a training aircraft, it is of great significance to Iran Air industry. For a long time, Iran Air has been subject to the technical blockade and unilateral sanctions of the United States and Western countries. However, relying on the efforts of its own companies and technical personnel, Iran's aviation industry has made great progress. Through reverse copying and independent research and development, it has constantly improved its core competitiveness, and has made outstanding achievements in the fields of light fighters, medium transport aircraft, trainers, drones, and airborne ammunition. It can be said that the birth of the new generation "Yasin" trainer aircraft has stimulated the development of domestically produced weapons and equipment in Iran, and also accumulated confidence and laid the foundation for promoting the localization of the aviation industry. The development of Iran's defense industry can be traced back to the early 19th century, when the Kaiga dynasty of Iran began to introduce weapons manufacturing technology from Western countries and establish a military industry. Afterwards, the Palevi dynasty relied on continuously accumulating oil wealth to exchange support from Western countries and vigorously supported the development of the defense industry. After the outbreak of the Islamic Revolution in 1979, Iran broke away from Western countries, and the newly formed Islamic Republic of Iran vigorously promoted the development of its defense industry. It established a military led and civil-military integrated defense industry system, maximizing defense independence and creating multiple military industrial complexes. After the outbreak of the Iran Iran War, Western countries in the United States began to sanction Iran, and Iran's weapons and equipment were extremely scarce. In this situation, Iran has reorganized its military industry system, established a national defense industry organization with a commanding nature, and comprehensively developed its military industry. In just a few short years, Iran has established tens of thousands of enterprises engaged in military production. These military enterprises play a crucial role in enhancing Iran's national defense capabilities and completing wartime military trade orders. It can be said that although the Iran Iran Iran War caused huge losses to Iran, it also promoted the rapid development of Iran's defense industry. It was during this period that Iran Air's aviation industry developed, maintaining the strong combat effectiveness of the Iranian air force by maintaining existing aircraft types. For example, Iran Air guaranteed the efficient attendance of American made fighters such as F-14A "male cat" and F-4D "ghost" in the war; Attach the "Hawke" surface to air missile to the F-14A fighter as a long-range air-to-air missile; Mount the "Maverick" air-to-ground missile onto the "Cobra" armed helicopter to solve the problem of ammunition shortage... The experience accumulated during the war has laid the foundation for Iran to develop domestically produced fighter jets. The end of the war