USSR with warshaw pact is military on par with the US with Nato. 10,000 Russian tanks are alone on eastern part of Germany.
USSR collapsed because of weak economy. Money running out because all money is spent on military. East Germany collapsed because of the same reason it running out of money. People watched western television they don’t understand why they go hungry to bed for the socialist cause. People in east Germany run to west Germany. At some time only old communists with fanatics stay in east Germany.