George Robert Acworth Conquest, CMG, OBE, FBA, FAAAS, FRSL, FBIS (15 July 1917 – 3 August 2015) was a British-American historian and poet, notable for his influential works on Soviet history including The Great Terror: Stalin's Purges of the 1930s (1968). He was a longtime research fellow at Stanford University's Hoover Institution. He wrote more than a dozen books on the Soviet Union and he was a traditional conservative.