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 was breaking off the relationship with Getzowa until 1903. His behavior was seen as dishonorable, creating fractures with others in the Zionist movement. His fellow students held a mock-court proceeding and ruled that Weizmann, should uphold his commitment and marry Getzowa, even if he later divorced her. Weizmann ignored their advice. In 1904, he moved to the United Kingdom after receiving a job offer from the Chemistry Department of the University of Manchester. He was appointed senior lecturer. In 1910, he became a British citizen, and held his British nationality until 1948, when he renounced it to assume his position