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
President of Israel Knesset to remove the president on grounds of misconduct or incapacity. Presidential tenure is not keyed to that of the Knesset in order to assure continuity in government and the nonpartisan character of the office. There is no vice president in the Israeli governmental system. If the president is temporarily incapacitated or leaves office, the speaker of the Knesset becomes acting president. The first presidential election took place on 16 February 1949, and the winner was Chaim Weizmann. The second took place in 1951, as at the time presidential terms were linked to the length of the Knesset term (the