Ya, I have been tracking him actually. It is an interesting story, on the one hand the elite on duty at the time say that he was a idiot that got taken advantage of by the West, And he says that he trusted too much and believed that the West was good for the promises that it made.
A good look at this is here
One of those promises is that NATO would not intrude Russia's space, a promise that the Western elite at the time deny they made but it sounds like something they would say to an idiot to get him to do their bidding. The recent advance by Russia into Ukraine has a long history.
I think that history will record that Gorbachev was not a particularly bright man who got psychologically caught up in the collapse of the USSR, he was demoralized, and he got taken advantage of. This is going to be a problem till the Russians get some respect, and I think the way they do it is by throwing in with China and perhaps India as the controllers of global affairs, taking over for the USA and our allies in Europe.
When Putin stares down Merkel and Obama he is sure that he and Russia will win in the end. I dont think that he is wrong.
Gorbachev? At this point all he hopes for is that he gets some credit for something by someone. It could happen.