Tupolev Tu-123
The Tupolev Tu-123 Yastreb (Hawk, Russian: Ястреб) was one of the earliest Soviet reconnaissance drones that began development in 1960.The Tu-123 was a long-range, high-altitude supersonic strategic unmanned reconnaissance aircraft, in a form reminiscent of a big dart, conceptually somewhat similar to the United States' D-21.The KR-15 was a lower-cost, short-life, expendable version of the R-15 engine used on the twin-engine, Mach 3-class Mikoyan-Gurevich MiG-25 Foxbat interceptor.After the cancellation of that project in favor of ballistic missiles, the design was modified for a high-altitude reconnaissance role.The Tu-123 served with Soviet Air Force intelligence units stationed in the western border military districts until 1979.