To what Extent Did Khrushchev Reduce Tension during 1953-1960?

Nikita Sergeyevish Khrushchev became the Soviet leader shortly after the death of the previous Soviet leader Stalin in 1953. Everyone hoped that Khrushchev would bring a period of "thaw" in the Cold War. Although his intentions were noble the US remained cautious about the Soviet Union. Khrushchev tried various ways to help reduce the tension between the USSR and the Western countries, namely the United States, but they were only successful to a certain extent.
Within his own borders, Khrushchev was only somewhat successful in reducing tension. Khrushchev gave a "secret speech" to the 20th Party Congress on February 25th 1956. Here Khrushchev attacked Stalin and claimed he was a murderer and a tyrant and pushed for reform in the USSR and in Eastern Europe. …