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Soviet–Afghan War
December 1979 – February 1989· War· Asia & Pacific
Well documentedSolid records, physical evidence or scientific consensus.
A decade-long war in which Soviet troops propped up Afghanistan's communist government against Islamic guerrillas known as the mujahideen.
See it on the Battles & Wars map →What happened
In December 1979 the Soviet Union sent troops into Afghanistan to prop up a shaky communist regime. Resistance fighters called mujahideen ('those waging jihad') fought from the mountains, armed and funded by the US, Saudi Arabia and Pakistan; US-supplied Stinger missiles from 1986 made Soviet aircraft vulnerable. About 15,000 Soviet soldiers died. Estimates of Afghan deaths range from about 500,000 to 2 million, and some 5 million fled abroad. Mikhail Gorbachev withdrew the last troops in February 1989.
Why it matters
It drained Soviet money, morale and prestige before the Soviet collapse, and left Afghanistan to civil war, the Taliban and foreign jihadist networks.
How we know
Soviet archives and veterans' memoirs, US records of the CIA's aid program (Operation Cyclone), Pakistani and Afghan accounts, and UN refugee data.
Still debated
How much the war, rather than economic failure, contributed to the Soviet collapse, and how decisive the Stinger missiles were, is debated.
Connections (3)
▸Guerrilla and insurgent warfare wore down Soviet forces in Soviet–Afghan WarWell documented
The connection
Afghan mujahideen used classic guerrilla tactics: ambushing supply convoys on mountain roads, hit-and-run raids, and safe havens across the border in Pakistan. A large modern army held cities and main roads but never the countryside, and steady losses with no clear path to victory pushed Moscow to withdraw.
When and how
Afghanistan's mountains and valleys, such as the Panjshir under commander Ahmad Shah Massoud, 1979–1989, with bases and training camps in Pakistan.
How we know
Soviet military studies, translated as 'The Bear Went Over the Mountain' (1996), document guerrilla ambushes and Soviet counter-tactics in detail.
Debates and open questions
Whether the mujahideen could have prevailed without foreign weapons and Pakistani sanctuaries, or the Soviets left mainly because of Gorbachev's reforms, is debated.
▸Soviet–Afghan War drained the Soviet Union late in Cold WarWell documented
The connection
The invasion ended détente: the US boycotted the 1980 Moscow Olympics, imposed a grain embargo and armed the mujahideen. For nearly ten years the war cost Soviet lives, money and prestige. Gorbachev called it a 'bleeding wound', and the 1989 withdrawal showed a weakened superpower shortly before its 1991 collapse.
When and how
Afghanistan, Moscow and Washington, 1979–1989; the Carter Doctrine was declared in January 1980, and the last Soviet troops left on February 15, 1989.
How we know
Soviet Politburo records, Gorbachev's statements and US aid records document the costs and decisions.
Debates and open questions
Some historians think the war's role in the Soviet collapse is overstated compared with economic stagnation and nationalism in the Soviet republics.
▸Soviet–Afghan War spawned the jihadist networks behind September 11 attacksMostly agreed
The connection
Thousands of foreign Muslim volunteers, the 'Afghan Arabs', went to fight the Soviets, among them Osama bin Laden. In 1988 he and others founded al-Qaeda to carry jihad beyond Afghanistan. Victory over one superpower convinced them they could defeat another, and Afghanistan later became their base under the Taliban.
When and how
Peshawar, Pakistan and eastern Afghanistan in the 1980s; al-Qaeda founded in 1988; bin Laden returned to Afghanistan in 1996.
How sure are we?
The 9/11 Commission Report and al-Qaeda's own statements trace the group to the Afghan jihad, which bin Laden often cited.
Debates and open questions
Whether US aid indirectly helped al-Qaeda is disputed: the CIA funneled aid through Pakistan to Afghan fighters, not to Arab volunteers like bin Laden.