After a whole 2 months. Clearly if one of your prime examples is something that couldn't even last a quarter of a year, you don't have a leg to stand on.
Moscow has survived attacks from France. Every viable political/economic system has to be able to defend itself. I hope you realize how ridiculous your argument is by giving an example of something that lasted just barely 2 months. That's like claiming that a perpetual motion machine exists by showing some swinging pendulum for 10 seconds.