Maria Weizmann an evidence of its importance to the Soviet regime. After Joseph Stalin's death and the admission by the Soviet leadership that the "plot" was made up, she was still kept in Lubyanka prison, and released only on August 12, 1953. Weizmann immigrated to Israel in 1956. She was officially rehabilitated after Perestroika in 1989. Maria Weizmann Maria Weizmann (; born 1893) was a sister of Israeli politician and scientist Chaim Weizmann (the first President of the State of Israel). She graduated from a university in Switzerland and worked as a doctor in Moscow from 1915. Maria Weizman and her husband
Chaim Weizmann Nobel Prize laureate Fritz Haber, but took over the directorship himself after Haber's death en route to Palestine. During World War II, he was an honorary adviser to the British Ministry of Supply and did research on synthetic rubber and high-octane gasoline. After the Second World War, a Jewish group called Nakam formulated several plans to kill Germans in revenge for the Holocaust. Nakam's leader Abba Kovner, a former Lithuanian partisan, testified that he had approached Weizmann (at that time, President of the World Zionist Organization) with plans for a mass poisoning and that Wiezmann had put him in touch