In 1963-1964 the Soviet Troops of Defense (PVO) established two new commands: PRO and PKO. PRO, meaning antimissile defense, was charged with detecting, intercepting, and destroying enemy ballistic rockets, while the PKO, meaning anti-space defense, was responsible for "destroying the enemy's cosmic means of fighting" (Reference 106). In 1992 the USSR Space Units which include PRO and PKO were essentially transferred to the CIS United Armed Forces. However, on 7 May 1992 the armed forces of the Russian Federation were established with specific air and space defense missions.
To implement a space control regime and to fulfill its space defense obligation, the PKO began developing ASAT capabilities. Today, the Russian Federation is commonly believed to have acquired four basic ASAT systems with varying degrees of effectiveness. However, the operational status of these systems is a topic of considerable debate.
106. For a more in-depth discussion of this topic and the history of Soviet space defense capabilities see N.L. Johnson, Soviet Military Strategy in Space, Jane's Publishing Company, London, 1987.