Weizmann was an important figure in the negotiations with the British government that led to the Balfour Declaration of 1917, supporting the idea of a Jewish  national home  in Palestine that also respected the rights of existing non-Jewish people already living there.
Weizmann was part of the negotiations that resulted in the creation of the Balfour Declaration of 1917.
The gigantic Place de la Concorde is built atop Rond-Point.