“If there were some excesses in the course of this just and titanic struggle, it was not Stalin who committed them, but Khrushchev, Beria and company, who for sinister hidden motives, showed themselves the most zealous for purges at the time when they were not yet so powerful. They acted in this way to gain credit as ‘ardent defenders’ of the dictatorship of the proletariat, as ‘merciless with the enemies’, with the aim of climbing the steps in order to usurp power later. The facts show that when Stalin discovered the hostile activity of a Yagoda or a Yezhov, the revolutionary court condemned them without hesitation. Such elements as Khrushchev, Mikoyan, Beria and their apparatchiki hid the truth from Stalin. In one way or another, they misled and deceived Stalin. He did not trust them, therefore he had told them to their faces, ‘. . . when I am gone you will sell the Soviet Union.’ Khrushchev himself admitted this. And it turned out just as Stalin foresaw. As long as he was alive, even these enemies talked about unity, but after his death they encouraged the split. This process was being steadily extended.”
— Enver Hoxha, The Khruschevites
The Espresso Stalinist 
Enver had a good understanding about Khrushchev, Malenkov, Beria and Mikoyan. A lot of facts can be got about Beria from his son’s biography of his father.