The SA-2, nicknamed Red SAM, is the most widely used air defense missile in history, most famous for nearly sparking a nuclear exchange between the USSR and America when one brought down a U-2 spy plane in 1960. Deployed widely against American aircraft in Vietnam the SA-2 has seen service in North Korea, Egypt, and various world conflicts including the 2003 Gulf War and remains in service today despite its aging 50-year-old technology.

Using rare interviews and accounts from the Russian designers of the weapon, and supported by photographs and color artwork, Steven J Zaloga examines the development of the SA-2, linking the technical history of the weapon to its massive impact on air campaigns during the Cold War, and investigates the design changes, which helped the SA-2 stand the test of time.