Chaim Weizmann institute was a global success attracting scientists from all over the Diaspora. In 1949 there were 20 researchers, twenty years later there were 400 and 500 students. The Honourable Chaim Weizmann met with United States President Harry Truman and worked to obtain the support of the United States, they discussed emigration, for the establishment of the State of Israel. The President lived at Rehovot, where he regularly received the Prime Minister David Ben-Gurion into his garden. He was denied any actualisation of the political role he had hoped for by the Left. He had to be consoled with the Weizmann
Chaim Weizmann with a chemist who arranged for a quantity of poison to be procured. According to the story, Kovner did not tell Weizmann of his intention to poison millions of Germans via their water supply, but only of the backup plan to poison SS members who were in allied POW camps. The lesser plan was put into operation in April 1946 at Stalag 13. Kovner's story was repeated in 1998 by another Nakam leader Yulik Harmatz. There is no independent evidence for the meeting and some historians doubt it. Kovner's biographer Dina Porat wrote that Weizmann was not in Palestine on