There’s an oft-told story that places Count Berchtold, foreign minister of the Austro-Hungarian Empire during the early 20th century, and Victor Adler, leader of the Social Democratic Workers’ Party, in a heated discussion.*
War was thundering on the horizon, and Adler was arguing that it might lead to a Russian revolution. “And who will lead this revolution?” Berchtold scoffed. “Perhaps Mr. Bronstein sitting over there at the Café Central?” Mr. Bronstein’s name was Leon Trotsky.
See The Struggle for Mastery in Europe 1848-1918 by A. J. P. Taylor.