The man played a great role in history. He was a serious alcoholic - I don't know if he ever went through recovery or not. I hope he at least tried to become sober.
During his first visit to America years ago, (he had some government position in old Soviet structure) Yeltsin got so drunk that the Washington DC cops had to pull him out of a public fountain. He was standing in the water, drunk out of his mind, and holding a bouquet of flowers.
I totally missed that story.