The S-125 Neva is a Soviet-designed surface-to-air missile system developed in the 1950s. It is primarily used to defend against aircraft and is capable of engaging targets at altitudes up to 18,000 meters. The system employs radar for target acquisition and guidance, making it effective in various combat scenarios. The S-125 has been widely exported and used by several countries, showcasing its versatility and reliability. It is often associated with other air defense systems, such as the S-75 Dvina, which was also developed during the same era. The Neva remains in service in some nations today.