Iran had an IslamicRevolution in 1979 deposing the Shah of Iran
Moscow didn't want this Islamicfundamentalism to spread across its borders as there were many Muslims living within the USSR
Moscow wanted to ensure a pro-Sovietgovernment in Afghanistan in order to protect its interests
2. September1979,HafizullahAmin staged a popular coup and toppled the pro-Sovietgovernment
3. At first Moscowsupported him, however, Amin became increasingly unpopular as other pro-Muslimfactions tried to overthrow him
1. In April1978, a pro-Sovietgovernment took control in Afghanistan and received economic assistance from Moscow
4. When Brezhnev heard rumours that Amin was talking to USA about support, he decided to act. On 24December1979, USSR invaded Afghanistan
5. USSR claimed they invaded in order to supportAmin, however, Amin was assassinated27December1979 and replaced by a pro-Sovietleader called BabrakKamal
6. USSR remained in Afghanistan for almost 10years fighting opponents of Kamal
Consequently, the USA was led to perceive the invasion as the spread of communism and worked hard to resist it, without becoming directly involved in the conflict
Consequently, the had USAtrained, armed and fundedMuslimguerrillafighters known as the Mujahedeen spending billions of dollars over the course of the war
Consequently, the USSR had spent approx. $8billion per year on the invasion and cost the lives of 15000Soviettroops and civilian casualties of 1.5milliondeaths
Consequently, the USPresidentCarterwithdrew from SALT 2 and increased military spending. This formally ended the period of détente
Consequently, the Olympicboycotts of the 1980 Moscow games and 1984LA games happened
Consequently, the USA introduced the CarterDoctrine