The Pozner family originally fled Soviet Russia after the Bolshevik Revolution, but Pozner became a Communist sympathizer while living in Europe. Pozner was chief engineer of the European branch of Metro-Goldwyn-Mayer (MGM) in Paris in 1938. He fought in the French army until its defeat in 1940 and then moved to the United States with his French wife and son in 1941. In 1943 he headed the Russian Section of the film department of the U.S. War Department. Pozner was a frequent contact of Louise Bransten.
Pozner's son, Vladimir Vladimirovich Pozner, worked for Radio Moscow and became a spokesman for the Soviet Institute on the United States and Canada, a think tank dominated by the KGB, was a frequent guest on American television in the 1980s and co-hosted an MSNBC cable TV show with Phil Donahue after the collapse of the Soviet Union.
Vladimir Aleksandrovich Pozner's cover name as identified in the Venona project by NSA/FBI analysts is "Plato".
Vladimir Aleksandrovich Pozner is referenced in the following Venona project decrypts:
- 1131–1133 KGB New York to Moscow, 13 July 1943
- 1930 KGB New York to Moscow, 21 November 1943
- Pozner memo, 23 May 1944, Comintern Apparatus file, serial 2378.
- John Earl Haynes and Harvey Klehr, Venona: Decoding Soviet Espionage in America, New Haven: Yale University Press, (1999), pg. 233.