Declassified CIA report:

Even in Stalin’s time there was collective leadership. The Western idea of a dictator within the Communist setup is exaggerated. Misunderstandings on that subject are caused by lack of comprehension of the real nature and organization of the Communist power structure. Stalin, although holding wide powers, was merely the captain of a team and it seems obvious that Khrushchev will be the new captain.

Davel, you do know that this is not a statement by the CIA, but a comment collected from an undisclosed USSR informant?
If we take these unevaluated comment reports as what the CIA thought, they would have changed their mind some time later.

Comments on the Current Soviet Situation:

Stalin was a fanatic, an all-powerful dictator with a persecution complex and a mania for greatness. He wanted to see his goals accomplished during his life- time. If he were still alive, the Soviet Union would be either on the brink of or in the midst of a catastrophe. It is hoped that the present authorities will permit their pursuit of their aims to be tempered by reason, and a recognition of the realities of life. They are normal people, not sick, and see that resistance to change must be considered. As Bukharin and Rykov proposed, many of the changes made by the Soviets can be retained; the others can be abandoned gradually, It is important to make concessions to the peasantry, and the authorities appear to have chosen that road. Malenkov’s speech of 8 August 1953 is regarded as a change from an unreasonable to a reasonable policy, Freedom, of course, is the most important thing and the regime can scarcely grant that and retain power. The disappointment to those who regard Malenkov’s speech as the beginning of a new era will be terrifying and may have consequences.