Answer:
Mass deportations, Great Purge and mass executions of high ranked officials in the Red Army.
Explanation:
Stalin always feared that someone close to him would betray him and seize power of the Communist party. His fears became so irrational that he would resolve to killing burocrats, officials and intellectuals from his inner circle.
In that he unencouraged any kind of political criticism he authorized mass deportations of followers of Trostsky, (the founder of the Red Army). His increasing fear made him believe that some periodical mass killings needed to take place, in so he set a periodic number of executions that were to be carried in order to keep the Soviet Union free from traitors.
his intensely violent moment is an important point in Stalin’s Great Terror that he inflicted upon the Soviet Union in the late 1930s.
As the killings ocurred, Stalin left no room for opposition within his party. Whether a party member was indeed a threat or not, Stalin left no place for doubts. His paranoia extended to party members then to civilians in the kulaks, and many nationalities faced harsh deportations.Stalin carried out purges in the Red Army in the midst of WW2.
Without any doubt, Stalin's purges were the only means of solving his fears.