The root: overthrow of the centrist Afghanistan government in April 1978 by left-wing military officers, who handed power over to two Marxist-Leninist political parties, the Khalq ("Masses") and Parcham ("Flag")
They had very little votes and accepted the help from the Soviet Union
Together, they began land and social reforms that were resented by anti-communists and Muslims.
The rebellion of the Mujahideen grew in response, spreading all over the country
1980-1981 The Mujahideen spread out freely throughout the countryside. The Soviet troops tried to crush the them by many tactics, but the guerrilla fighters escaped their attacks.
1982 The war quickly settled down into a stalemate
1982 – 1983 The Soviets then attempted to eliminate the Mujahideen's by bombing the rural areas. By 1982 some 2.8 million Afghans had immigrated a to Pakistan, and another 1.5 million had immigrated to Iran.
1984 – 1988 The Mujahideen had the upper hand by using shipments of weapons from the US through Pakistan, such as shoulder-fired antiaircraft missiles.
In early 1989 the United States, Pakistan, Afghanistan, and the Soviet Union signed an agreement to withdraw Soviet troops and return Afghanistan to a status of peace.