On August 21, the self-proclaimed State Committee for the State of Emergency (GKChP) ordered its troops to withdraw from Moscow. The order was an admission of defeat. The coup had begun on August 19 with tanks rolling into the capital and Gorbachev placed under house arrest at his Crimean dacha. The plotters, including the KGB chief and the defense minister, aimed to halt Gorbachev’s reforms and prevent the signing of a new union treaty that would devolve power to the republics. They assumed the Soviet populace was passive and the machinery of state would obey.
They were wrong on both counts. Russian President Boris Yeltsin, standing defiantly on a tank outside the Russian parliament building, became the focal point of resistance. Crowds built barricades. Key army commanders, like the commander of the Soviet Airborne Forces, General Pavel Grachev, refused to assault the parliament. By the 21st, the coup’s momentum had evaporated. Gorbachev returned to Moscow, but his authority had bled away to Yeltsin and the republican leaders.
The immediate consequence was acceleration. The failed coup demonstrated that the old central power structure was hollow. In the following four months, Ukraine voted for independence, the Soviet republics disbanded the union, and Gorbachev resigned as president of a country that ceased to exist on December 26, 1991.
The event is often framed as a triumph of democracy over tyranny. A more precise reading is that it was a failure of authority. The plotters lacked the will to use maximum force, and the institutions they commanded were no longer monolithic. The coup did not cause the Soviet collapse; it was the collapse happening in real time, a bureaucratic seizure that found nothing left to seize.