Savely Abramovich Sorine

Yakov Lazarevich Yudelevsky, better known by his literary pseudonym Jacques Delevsky, was a Russian-Jewish historian, writer and prominent figure of various anti-tsarist movements in Russia. Imprisoned twice for his revolutionary activity, Delevsky was also exiled to Yakutia in north-eastern Siberia for five years where he worked as a teacher. Having served his time, Delevsky emmigrated and settled in Paris where he was involved with the various opposition groups of the Socialist Revolutionary Party and graduated from the Mathematics Faculty of the Sorbonne.

The outbreak of the 1917 Revolution in Russia led Delevsky to rethink his revolutionary views and take a stance opposing the Bolshevik regime. Well-known in the circles of the Russian-Jewish intelligentsia, he became a member of the International League Against Anti-Semitism founded in Paris in 1927. He left Europe for the United States at the beginning of the Second World War finally settling in New York.