Who was the Soviet general secretary who denounced Stalin's atrocities but sent in tanks to crush the anticommunist Hungarian uprising, killing some twenty thousand Hungarians?
Nikita Khrushchev famously denounced Stalin in his "secret" speech in 1956 behind closed doors. After Stalin's death, Khrushchev would implement several policies taken together to be known as the "Khrushchev Thaw"
