A land without a people for a people without a land throw upon the Jews the actual manual labor of regeneration and prevent them from exploiting the "fellahin", whose numbers and lower wages are moreover a considerable obstacle to the proposed immigration from Poland and other suffering centers". In 1914 Chaim Weizmann, later president of the World Zionist Congress and the first president of the state of Israel said: "In its initial stage Zionism was conceived by its pioneers as a movement wholly depending on mechanical factors: there is a country which happens to be called Palestine, a country without a people, and, on the other hand, there exists the Jewish
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