On 29 August 1939, Weizmann sent a letter to Neville Chamberlain, stating in part: "I wish to confirm in the most explicit manner the declarations which I and my colleagues have made during the last month and especially in the last week: that the Jews stand by Great Britain and will fight on the side of the democracies." The letter gave rise to a conspiracy theory, promoted in Nazi propaganda, that he had made a "Jewish declaration of war" against Germany.