born Nov. 19, 1873, Kamyshin, Russia
died April 15, 1952, New York, N.Y., U.S.
Russian revolutionary, cofounder of the Russian Socialist Revolutionary Party .
A revolutionist from 1893, he became a member of his party's central committee in 1902 and wrote the party's platform. In 1917 he served briefly as minister of agriculture. He was elected president of the constituent assembly that opened in Petrograd on Jan. 18, 1918, but was dispersed the next day by the Bolsheviks. He emigrated in 1920, wrote (sometimes as Boris Olenin) and lived in Paris until 1940, then went to the U.S., where he wrote for anticommunist periodicals.