The most accurate description of the political history of the Soviet Union after Stalin's death is:
"After Stalin’s death, the Soviet Union had very few instances of stability, as it went through multiple leaders."
Following Stalin’s death in 1953, there was a power struggle and a period of instability characterized by the rise and fall of various leaders. Nikita Khrushchev became the leader after a power struggle but was later ousted, and Leonid Brezhnev took over, leading to a long period of relative stability. However, the overall leadership in the years immediately following Stalin's death saw significant changes and fluctuating power dynamics.