 Under President Jimmy Carter, the West joined the Soviet Union and others in enacting sanctions against weapons trade and weapons-grade material to South Africa.However, forceful actions by the United States against Apartheid South Africa were diminished under President Reagan as the Reagan administration feared the rise of revolution in South Africa as had happened in Zimbabwe against white minority rule.In 1979, the Soviet Union intervened in Afghanistan to establish a Marxist–Leninist state, although the act was seen as an invasion by the West which responded to the Soviet military actions by boycotting the Moscow Olympics of 1980 and providing clandestine support to the Mujahideen, including Osama bin Laden, as a means to challenge the Soviet Union.