Member, Central Committee, Socialist-Revol Party. 1918, after Bolsheviks dispersed Constituent Assembly, represented Party Central Committee in Council of Military Commission. 7 August 1922 convicted in trial of right-wing SocialistRevolutionaries.
Sentenced by Supreme Tribunal to be executed by firing squad. Presidium of All-Russian Ccntr Executive Committee confirmed the sentence but stayed execution on condition that the Socialist-Revol Party cease its struggle against Soviet regime. The Presidium of the All-Russian Central Executive Committee ordered that Donskoy be held in strict confinement.