Grigory Zinoviev, born Ovsei-Gershon Radomyslsky in 1883, was a founding figure of the Bolshevik revolution who stood shoulder to shoulder with Lenin, yet ended his life pleading in a Soviet prison corridor in 1936. Initially dismissed as a pale, sickly young man, he became Lenin's indispensable chief of staff and a captivating orator who amplified Lenin's ideas into fiery, digestible rhetoric.

This deep dive builds a psychological profile of a political operator who designed the bureaucratic machinery that would destroy him. It traces his fateful hesitation before the October Revolution, his rise to lead the Communist International, and his fatal underestimation of Stalin.

• His break with Lenin over the timing of the armed insurrection in 1917
• Leading the Comintern as a ruthless global franchise enforcing the Russian mode ...