George Robert Acworth Conquest, CMG, OBE, FBA, FAAAS, FRSL, FBIS (born 15 July 1917), known best as Robert Conquest, is an Anglo-American historian and poet best known for his influential works of Soviet history which include The Great Terror: Stalin’s Purges of the 1930s (1968, 4th ed., 2008). He is currently a research fellow at Stanford University's Hoover Institution.