A fully illustrated technical guide to the Sukhoi Su-25 Frogfoot.The Sukhoi Su-25 Frogfoot was the Soviet Air Force's first mass-produced jet purposely designed for the close air support (CAS) role and was a simple, effective and durable attack aircraft that, by 2012, had seen combat in no fewer than 40 conflicts. Some 630 Su-25s were built between 1979 and 1991, as well as 185 export Su-25Ks, 70 Su-25UB/UBK Frogfoot-B two-seaters that rolled off the production line at the aviation plant in Ulan Ude (UUAP), Russia. The Frogfoot is known as the most cost-effective ground attack aircraft available to the Russian Air Force (RuAF). Between the RuAF and the Russian Navy's aviation assets, some 200–220 Su-25s have been in operation including on both sides during the 2022 Russian invasion of Ukraine.Illustrated throughout with photographs and colour artwork, this title examines the development history, evolution and combat performance of the Su-25 Frogfoot, and details its effectiveness and reliability. Such is the reputation the Su-25 has earned, 19 of the 25 nations to have deployed a Frogfoot variant continue to operate them today.