Why the Soviet Union spent a decade fighting a war it initially refused to join
The Soviet–Afghan War began in 1979 as a reluctant intervention and ended in 1989 as a catalyst for the Soviet Union's collapse. While Moscow initially resisted calls to send troops, fearing a quagmire, internal instability and Cold War anxieties eventually pulled them into a conflict that cost millions of lives.
The conflict originated from the rapid destabilization of the People's Democratic Party of Afghanistan (PDPA) after its 1978 rise to power. Following the Herat uprising in March 1979, the Afghan government repeatedly begged Moscow for military support. Soviet leaders, including Alexei Kosygin, initially rejected these requests, fearing that direct intervention would trigger bitter resentment among the Afghan population and hand a propaganda victory to their rivals. They viewed Afghanistan as having little strategic weight and were wary of the high costs of occupying a country with a hostile population and a crumbling economy.
However, by late 1979, the Soviet perspective shifted dramatically. The Kremlin grew increasingly paranoid about the influence of the Iranian Revolution on its own Central Asian republics and became convinced that the Afghan leader Hafizullah Amin was secretly colluding with the United States. Although later evidence revealed that the KGB had forged the claims of Amin's CIA ties, the Soviet leadership acted on this intelligence. They also saw the failure of the SALT II treaty and deteriorating relations with the West as signs that détente was dead, removing the diplomatic constraints that had previously kept them out of the country.
The resulting decade-long war saw the Soviet military occupy major cities and communication lines, while mujahideen guerrillas controlled the rugged countryside. The Soviets employed brutal tactics, including scorched-earth policies and the widespread use of landmines, yet they could not stabilize the PDPA. By the time Mikhail Gorbachev announced a full withdrawal in 1987, the war had exhausted Soviet resources and morale. The final Soviet column exited in February 1989, leaving behind a power vacuum that led to further civil wars and, ultimately, the dissolution of the Soviet Union in 1991.
Source: Soviet–Afghan War
