What phenomena, events of the USSR contributed to the strengthening of the regime of Stalin’s personal power?

Stalin was the head of the USSR during the victorious World War II, which helped to increase his authority and strengthen his power. Also, Joseph Vissarionovich introduced massive repressions, which served as intimidation for the people. For the period of Joseph Vissarionovich’s leadership of the Soviet Union, the personality cult of Stalin, propaganda of adoration of the leader, and control of the country’s culture are characteristic. All these activities contributed to the strengthening of his power. In addition, it was under the control of this statesman that the USSR recovered after the Second World War, when the tough hand of the leader was so needed to carry out successful centralization and mobilization.