>>837523
The struggle for power already started while Stalin was dying, and Beriya pulled the shortest straw in the end. The SU needed change and Khrushchev dumped responsibility into the neck of Stalin and Beriya so he'll be able to initiate what needs to be done.
These were close associates for long time, "friends", so the tone of conversations must have been similar between them. They were also in cliques as people tend to do in a group, and rivaled each other.
There are many details that plausible but ofc basically everything is made up in one way or another, it's a comedy.