The S-300 is a series of surface-to-air missile systems developed by the Soviet Union, designed to provide air defense against various aerial threats, including aircraft and missiles. First introduced in the late 1960s, it has undergone several upgrades and variations, enhancing its range and capabilities. The system is known for its effectiveness in both strategic and tactical roles, making it a key component of many countries' air defense strategies. The S-300 can track multiple targets simultaneously and engage them at long distances, contributing to the overall security of airspace in regions where it is deployed.