CoCom embargo on Soviet computing (1949-1994)
Seventeen Western countries ran the Coordinating Committee for Multilateral Export Controls, blocking sales of advanced computers, semiconductors and machine tools to the Soviet Union. Moscow built domestic clones of IBM mainframes and DEC minicomputers, often by reverse-engineering smuggled units.
Soviet computing trailed the West by roughly a decade through the 1970s and 1980s. Smuggling networks ran through Austria, Switzerland and West Germany.
By 1989 the Soviet electronics industry was structurally behind and could not pivot when CoCom dissolved. Post-Soviet Russia rebuilt on Western imports rather than domestic chips.
Russia's current playbook—official restrictions plus tolerated gray-market routes plus a domestic-industry build—maps closely onto the late-Soviet response to CoCom.
