Mark Zborowski

Mark Zborowski (27 January 1908 – 30 April 1990) (AKA "Marc" Zborowski or Etienne) was an anthropologist and an NKVD agent (Venona codenames TULIP and KANT). He was the NKVD's most valuable mole inside the Trotskyist organization in Paris during the 1930s and in New York during the 1940s. Provided by Wikipedia