By the 1950s his enthusiasm for the Soviet Union had completely evaporated, particularly after the Soviets executed Jewish writers in 1952.
baɪ ðə nˈaɪntiːnhˈʌndɹɪd fˈɪfti z hɪz ɛnθˈuːziˌæzəm fɚðə sˈoʊviət jˈuːniən hæd kəmplˈiːtli ɪvˈæpɚɹˌeɪɾᵻd, pɚtˈɪkjʊlɚli ˈæftɚ ðə sˈoʊviəts ˈɛksᵻkjˌuːɾᵻd dʒˈuːɪʃ ɹˈaɪɾɚz ɪn nˈaɪntiːnhˈʌndɹɪd fˈɪfti tˈuː.