You are not right. Gorby was a weak lib idealist busy to clean, as he seen, a brutal image of his nation using Perestroika (Rebuild or Change in Russian) with numerous concessions at home and abroad. Doing that he ruined a basis of a society same way Obama is doing to American values trying to be nice to everyone Worldwide.
Yeltsin as a governor of Russia - a state within a Soviet federation took advantage of a Gorby’s weak leadership to ruin a Union to become #1. He has declared independence, so did his collegues in other states leaving lib idiot Gorby rule a federation without states.
In fact Soviet dissolution was not a peaceful transition. Thousands has died, especially in Central Asia.
I see it differently. Gorby had a choice: civil war and the eventual dissolution to the current status, or a more or less peaceful transition to the current status. I believe he made the right decision and knowingly guided Russia to a more stable status. As for the thousands who died, that's comparatively good by Russian standards. The alternative of an all out war within the old USSR, would have been far worse, potentially comparable to the 3M to 9M who died in the 1917-1922 wars.
The difference with Obama is that he is destroying a mostly unified country, with his corruption and weakness triggering talk of civil war as a realistic option when that has not been a consideration in 140 years.