https://www.cia.gov/readingroom/docs/CIA-RDP80-00810A006000360009-0.pdf
The main claim I want to focus on is that Stalin wasn't a dictator, or had dictatorial power. How true is that?
You may enjoy:
Was Stalin really "bad"? answered by /u/restricteddata
and
Was Stalin ever 'sole' leader/dictator, or could he have been overthrown by his supporting members on the Politburo? answered by /u/International_KB
and for bonus credit, this answer by /u/Kochevnik81 about Stalin's murder count.