During the Great Purge, he was put on the last of the Moscow Trials, the Trial of the Twenty-One, and subsequently executed.
dˈʊɹɹɪŋ ðə ɡɹˈeɪt pˈɜːdʒ, hiː wʌz pˌʊt ɔnðə lˈæst ʌvðə mˈɑːskoʊ tɹˈaɪəlz, ðə tɹˈaɪəl ʌvðə twˈɛntiwˌʌn, ænd sˈʌbsᵻkwəntli ˈɛksᵻkjˌuːɾᵻd.