Chaim Weizmann the date of the alleged meeting but allows that he might have met Weizmann in early 1946 instead. Chaim Weizmann Chaim Azriel Weizmann ( "", "Khaim Veytsman"; 27 November 1874 – 9 November 1952) was a Zionist leader and Israeli statesman who served as President of the Zionist Organization and later as the first President of Israel. He was elected on 16 February 1949, and served until his death in 1952. Weizmann convinced the United States government to recognize the newly formed state of Israel. Weizmann was also a biochemist who developed the acetone–butanol–ethanol fermentation process, which produces acetone through
Chaim Weizmann been successful. Of Chaim Weizmann's fifteen siblings, eleven survived to adulthood. Ten of the eleven surviving siblings made aliyah. Two also became chemists; Anna (Anushka) Weizmann worked in his Daniel Sieff Research Institute lab, registering several patents in her name. His brother, Moshe Weizmann, was the head of the Chemistry Faculty at the Hebrew University of Jerusalem. Two siblings remained in the Soviet Union following the Russian Revolution, a brother, Shmuel, and sister, Maria (Masha). Shmuel Weizmann was a dedicated Communist and member of the anti-Zionist Bund movement. During the Stalinist "Great Purge", he was arrested for alleged espionage and