Chaim Weizmann Zionist activity, and executed in 1939. His fate became known to his wife and children only in 1955. Maria Weizmann was a doctor who was arrested as part of Stalin's fabricated "Doctors' plot" in 1952 and was sentenced to five years' imprisonment in Siberia. She was released following Stalin's death in 1953, and was permitted to emigrate to Israel along with her husband in 1956. Weizmann was married to Vera Khatzmann. The couple had two sons. The younger one, Flight Lieutenant Michael Oser Weizmann (1916–1942), fought in the Royal Air Force during World War II. While serving as a pilot
World Union of Jewish Students highlighting the plight of German Jewry, the opening session was presided over by the renowned British philosopher Samuel Alexander who finished his opening statement with the line "I have become a Zionist", which was met with wild applause. It was decided at the congress that Einstein would remain President alongside a group of Vice-Presidents that would include Chaim Bialik, Sigmund Freud and Chaim Weizmann. Maurice Perlzweig, a young, British Liberal rabbi, was elected chairperson at the 1933 Congress. By 1936, Perlzweig was also a leader of both the Zionist Organization and the World Jewish Congress, which he had helped to