Setting the scene
The Soviet Union invaded Afghanistan on December 24, 1979, sending 100,000 troops to support the communist government against mujahideen rebels. The invasion began with Operation Storm-333 on December 27, when Soviet special forces stormed the presidential palace in Kabul, killing President Hafizullah Amin and installing Babrak Karmal. The USSR claimed it was invited under the Brezhnev Doctrine to protect socialism.
What happened
The invasion was a response to instability after the 1978 communist coup and fears that Afghanistan would fall to Islamists or align with the U.S. The Soviets expected a quick operation like Hungary 1956 or Czechoslovakia 1968, but faced fierce resistance from mujahideen funded by the U.S., Pakistan, Saudi Arabia, and China. The war became a quagmire—Soviet troops controlled cities but not countryside.
Why it still matters
The Soviet-Afghan War lasted nine years, killing 1 million Afghans and 15,000 Soviets. It contributed to the USSR's collapse—costing billions, demoralizing the army, and creating a generation of disaffected veterans. The U.S. boycotted the 1980 Moscow Olympics in protest. The Soviets withdrew in February 1989, and the war created the conditions for the Taliban's rise and al-Qaeda's formation. December 24, 1979, began the Soviet Vietnam and demonstrated the limits of superpower intervention in Afghanistan, a lesson the U.S. would relearn after 2001.
Background
A decade of guerrilla war followed.