Excerpt from Strange Days: the August Revolution and Its Aftermath by Claude Summers
The fall of Moscow was an extraordinary event, but it would have meant nothing had events only been confined to that city. Despite the best efforts of the government news of the events spread across the country, although at first the news was only that there were large protests that had turned violent in Moscow. In response to this news people in the cities of Leningrad, Smolensk, and Sverdlovsk took to the streets. Like the protestors in Moscow their main issue was rationing, and like the Moscow protestors they were met with force (although the government, having learned their lesson from Moscow, sent only the MGB in). That should have been the end of it, but then on August 17th the rebels captured the Radio Moscow headquarters. The Soviets were caught off guard, having figured that the building would hold out for far longer, and thus hadn’t jammed radio signals or destroyed the station. This allowed the rebels to broadcast several messages, allowing people outside of the Moscow area to know what was happening for the first time. The public believed these messages in large part because the Soviets had imposed martial law throughout the country, something that wouldn’t have happened if something serious wasn’t going on.
The response was swift and severe, with thousands in Smolensk, Leningrad, Gorky, and other cities in north and central Russia taking to the streets. They were joined by soldiers and sailors, many of whom shared the opinions of their comrades in Moscow. From these bases the revolution spread, until cities across the Soviet Union were in revolt. By the start of September the rebels controlled most of north and central Russia, most Siberia (the Yenisei River is generally agreed by scholars to be the approximate edge of their control), and a large chunk of the Urals (namely the cities of Sverdlovsk, Perm, and Chelyabinsk). Independence-minded rebels controlled most of the territory in SSRs outside of Belarus and Central Asia. The stage was set for the Second Russian Civil War.